Bloodline Detectives - Season 2, Episode 2 - Sacrilege in Sacramento - Full Episode | Forensic Files

Good evening. I'm Nancy Grace. Tonight, three women fall victim to violent sex attacks,
and then a 30-year search for their attacker. May 1992, Sacramento, a woman subjected
to a terrifying, violent rape inside her own home. They were going off of a 20 to 40-year-old
white male wearing a ski mask. NANCY GRACE: A full-on investigation launches. But in spite of evidence, no perp is identified.
We had no fingerprints, nobody who could identify. So we did not have much in the beginning
to eliminate somebody. NANCY GRACE: March 1994, evidence links another attack with a similar MO.
She said that she mentally prepared herself that she was going to die. NANCY GRACE: Law enforcement searches for the attacker,
but once again, he evades detection. They had fingerprinting, blood typing, serology.
But they ultimately ran into a dead end. This is the story of three women, three survivors
of vicious sex attacks, and how bloodline detectives finally capture a serial rapist almost three decades later.
This is "Bloodline Detectives." [THEME MUSIC] May 5, 1992, a woman viciously attacked when she comes
home from work in Sacramento. She is early 50s. She's an administrator at a local hospital.
And she's working late because she's at a meeting. So she comes home about 8:30.
It's a single-story, single-family residence, three bedroom, two bath. SHAUN MCGOVERN: She had a home alarm system.
So she had deactivated the alarm when she first arrived home. She enters a hallway and is on her way to the master bedroom
when suddenly she is struck in the face and by a man. She knows it's a man because of the height and the strength.
And she sees that this person is wearing a ski mask. She sees, because of the holes in the ski mask
around the eyes, she can see that there's white skin. And she sees a knife. He pushes her down to the ground.
And the entire time, he's verbally abusing her. He's telling her he's going to kill her.
He's telling her he's going to hurt her. He's telling her he's going to cut her head off.
NANCY GRACE: She struggles and puts up a fight, but she's quickly overcome. Like many people, her instinct was to fight.
And so initially, she did fight. And ultimately, he slammed her against one of the walls,
causing an injury to her head. MICHELLE HENDRICKS: With head wounds, they bleed profusely.
So she is trying to figure out what has happened, because he gets her on the ground
and immediately he flips her over onto her stomach. He binds her wrists and he binds her ankles.
Then he keeps her on the ground for a minute and he disappears, comes back with tape,
and starts wrapping the tape around her eyes and her mouth. After he does, that he puts a pillowcase on her.
This entire time he's berating her, telling her he's going to commit violence against her, telling her he's
going to kill her. So she tries to get herself composed. He picks her up and walks her backwards down the hallway
to the master bedroom. He shoves her onto the bed. Now, at this point, her hands and feet are bound,
she's got tape around her whole head, and she's got a pillowcase on her face. She can kind of make out shadows and dark and light.
So she can kind of track where he's going in the room. Then he proceeded to cut her clothing off
with a sharp object. And then he sexually assaulted her. He asked for money. He demanded money.
He spent a lot of time rummaging around in her house. MICHELLE HENDRICKS: Then she tells him that she
needs to use the restroom. She uses the toilet as she is bound, hands, feet, and her head covered with pillowcase.
She needed to clean herself. And she asked him if he would untie her hands so she could do that.
And he didn't answer her. The next thing she knows is she hears the water in the tub next to her running,
I'm sure she thought that her end was near and that he was ultimately going to kill her.
But she was just trying to survive this ordeal and get herself out alive. MICHELLE HENDRICKS: He puts her, picks her up from the toilet,
and puts her in the tub. After washing her for a bit, he makes her stand up. And he makes her turn in quarter turns as the water hits her.
And she has to do that twice. She could feel his hands on her. And she determined that he was wearing some sort of gloves.
She felt they were fabric. He gets her out of the tub, proceeds to walk her back to the master bedroom.
He dries her off in the bed. Then he proceeds to untie her feet. He retires them to the bed frame and he,
again, sexually assaults her. He was in the house for several hours. He would sexually assault her.
He would leave, ransack through the home, looking for property. This was kind of a pattern throughout the time
that he was there. MICHELLE HENDRICKS: After all of that, he asks her, if I retire your hands,
will you be able to get out? She didn't know what that meant. He proceeded to untie her hands from behind.
He ties him in front of her. And she felt like he tied them a little looser than previous.
So he asks her again. And he said, do you think you could get loose if I leave you this way?
And she tells him yes. And then he tells her, don't call the cops, because if you call the cops, I will come back
and I will kill you. Then he asked some questions about religion, are you religious?
And she says yes. And he asked her what religion she is. And she tells him. And then he says, I'm going to leave.
You wait 10 minutes. So she waited. And she was able to free herself from the bindings.
She had to cut the leg ties off because she couldn't undo them. She was able to call her daughter, who
came over with her son-in-law. And they're the ones that called the police. NANCY GRACE: Detectives and a forensic team
launched their investigation of the crime scene. ANNE MARIE SCHUBERT: They meticulously
collect evidence, taking photographs, documenting that crime scene. Sometimes people need to remember that when you collect
evidence, you don't know where that future of that evidence goes. We don't know what technology, where it will bring us.
But you always have to have it in mind that you have to be meticulous in your collection
so that maybe someday, we can use some of this evidence in a way that's never been done before.
Searching the home, investigators determine how the attacker entered the home. MICHELLE HENDRICKS: One of the detectives
realizes that there is an attic dormer. There's two on the roof. And it looks as if they're damaged.
So that leads them to look in her master bedroom closet, where they see that the attic access panel is askew.
It's not properly seated in the roof. NANCY GRACE: The victim gives a full and complete description
of the attack to officers. The victim, even though she was injured and even though she had been traumatized,
she had the intestinal fortitude and the strength of character to show them where everything happened.
And then ultimately, when she was taken to the hospital, had an examination done.
MICHELLE HENDRICKS: She had two lacerations behind her left ear that bled. She also had circular and linear abrasions
around both her wrists. She talks with the nurse and she explains what happened to her,
and because where that story leads the nurse is where the evidence is swabbed for.
So it's always very accustomed exam. So photographs are taken of all injuries. And then some of the photographs can be pretty invasive.
We ask a lot of crime victims, particularly sexual assault victims and survivors, it's a necessary step for us
to find the perpetrators. But it is so invasive to them that I have no doubt it's something they
never forget through the course of their lives. AMY HOLLIDAY: Things were different
then than they are now. Now we have doctors and nurses who are trained specifically
for this type of examination, who I think know how to handle it a little bit better emotionally, whereas back
in the '80s and '90s, it was handled by whatever doctor or nurse was on duty. And so I think that it's not approached
the same then as it is now. But I think she understood and appreciated that it was necessary in order to potentially
catch this person. NANCY GRACE: Investigators began to canvas the neighborhood. The patrol officers did canvas the neighborhood.
They spoke to many neighbors, looking for anyone who had seen or heard anything, anyone unusual
in the neighborhood, anything out of place. And no one really reported anything significant.
There was not any surveillance system. This was before home surveillance was as popular as it is now.
NANCY GRACE: The quiet Sacramento neighborhood is reeling from the sex attack. And investigators begin their search for the perpetrator.
There were no leads or suspects. There was a lot of follow-up on tips that did come in of oh,
this person was in the area. That person was in the area. In fact, someone was arrested that they thought
was responsible for the case, who was ultimately cleared by DNA evidence. The investigation goes on nearly
two years with no solid leads. Then, March 1994, the same perp strikes again. That's next on "Bloodline Detectives."
March 1994, Sacramento Police investigating an extremely violent, sexually-motivated home
invasion. They have very few leads, and then a call about another attack. I received a call advising me of a serious sexual assault
that had just occurred. I responded to the hospital where the victim had been taken.
NANCY GRACE: The woman, bloody and dazed, describes her ordeal. MICHELLE HENDRICKS: She comes home from work.
She enters through her garage. She sets her stuff down. She's walking through her house.
And all of a sudden, she is viciously physically attacked by a subject wearing a mask.
She did initially try to fight back. When she did fight back, she was struck in the head
by a hard object, ended up with a skull fracture in two locations on her head. He was in the house for a pretty good amount of time
prior to the attack because he had already cut cords for binding. He knew what he wanted to do.
AMY HOLLIDAY: He sexually assaulted her on the couch in the living room multiple times and then left her there,
ransacked through the home, demanded money, was asking for other property within the home,
then took her into the bedroom and sexually assaulted her repeatedly there as well.
NANCY GRACE: The attacker also forces his victim into a shower. He fills up the bathtub and then tells
her to sit in the bathtub. And he loosens her bindings, asks her if they're loose enough for her to get
out if she wanted to get out. AMY HOLLIDAY: She wasn't sure if he had left the house or not.
And so she was able to untie herself in the bathtub and get out. She grabbed a towel.
She grabbed her car keys, fled out the back of the house, got in her car, and drove to a friend's house.
She actually drove the car up on the lawn of the friend's house and got out with nothing but a towel
on and ran and pounded on the door. NANCY GRACE: Evidence is collected from the survivor
and from her home. When I arrived at the hospital, she was being treated in the emergency room.
And I learned that the towel that the victim sat on in her vehicle was at a friend's house.
It was left there. And I responded over there and met with the friends and retrieved the towel for possible evidence.
When I went to the residence, I was able to retrieve the cushions off of the couch were part of the sexual assaults had occurred.
AMY HOLLIDAY: They seized the bedding where she had been sexually assaulted and also the items that were still
in the bathtub, clothing and some other sheets that were in the bathtub. They immediately canvassed the neighborhood.
They talked to many, many neighbors to see if anyone had seen anything. There was a few leads initially of people who'd been seen
walking in the area repeatedly. So that type of information was turned over. But the investigation cleared all of those people.
NANCY GRACE: The woman describes the attacker as having blue eyes, but she can't
provide any further detail. By his voice, she estimated that he was young, educated.
NANCY GRACE: DNA confirms what investigators already know, both attacks carried out by the same man.
When it became known that this case matched the County case that happened two years earlier,
we knew then that this was a serial rapist. And that then generated more work, because the question then became, what is the commonality
between these two women? Why is he picking these women? Is there something? Is it somebody that services both their homes?
Is it an electrician? Is it a painter? Is it a landscaper? All of those things were run down.
Questionnaires were filled out. I remember very distinctly myself and another prosecutor in my office
sitting down with these victims, trying to find any kind of common thread between either one of them.
Did they go to the same dry cleaners? Did they take their cars to the same mechanics?
All of those questions were being asked by law enforcement and those of us that were trying to understand,
was there a common connection that could lead us to the perpetrator? 2000, six years after the initial attack,
Anne Marie Schubert contacts Detective Pete Willover about using a new forensic weapon
to catch the serial rapist. PETE WILLOVER: Anne Marie Schubert, by this time, was working sexual assaults with the District Attorney's
Office in Sacramento County. And I had worked numerous cases with her. She had asked me if we had any unsolved cases that might be
good for a new idea that she had read about, where we could get a warrant on just
the DNA alone, which would then put a freeze on the statute of limitations. ANNE MARIE SCHUBERT: At that time in California,
we had to charge somebody with a crime, a sexual assault within six years of that crime occurring.
Around that same time, I happened to see an article in the newspaper about a prosecutor
in Wisconsin who had charged what we call a John Doe warrant, meaning they didn't know who was the perpetrator,
but they had their DNA. So when Pete Willover called me that day, I said, you know what?
Let me do some research and see if there's something more we can do here. We did a lot of research, collaborated
with colleagues in the office. Some people said absolutely not that I talked to.
And then when we did the research, I felt strongly that we had the right legal grounds to charge
somebody, even though we didn't know who they were, with these horrific crimes, so that we
could preserve what we call the statute of limitations. We made a decision after doing DNA testing to charge People
versus John Doe and charge his genetic profile as his description. We just knew that we needed to keep those cases alive
so if and when someday we figured out who this guy was, we could prosecute him. So there was still probably uncertainty
for them, because they didn't know if it would ever-- if it would ever work or are we
ever going to catch the guy. But I'd like to believe they felt some sense of relief
that there were people out there that were still fighting for them, supporting them, and advocating for them.
NANCY GRACE: With this groundbreaking arrest warrant issued, the case is reinvigorated.
We did a familial search through California DOJ, no familial search, meaning that nobody
in our convicted offender database was related to this offender. We had this DNA put into what called CODIS or DNA
Databank, no hits on that. Investigators get no new leads until 2013, when with advanced DNA profiling,
another attack is linked to the same perpetrator. It's 2013. Detectives in Sacramento hunting a serial rapist.
They've got very few leads. Then they learn about a third attack linked to the same perp.
I was notified that our two cases matched a city case in the county, and then another one
from Yolo County. And that was completely different than the other two. It was a college student at the time who was out jogging.
She was attending the university in that town. She went down jogging near what's called
Cowell Boulevard in Davis. It's a busy area. It's a well-developed area. And she was running towards the Nugget Market,
one of our local chain markets. She was distracted while she ran near a field. She instantly realized he was wearing a mask
with eye holes cut in it. And she knew pretty quickly that his intentions were bad.
And he essentially hit her with a stun gun of some sort. She felt electric pulsing and was shocked, disoriented.
He physically grabbed her and essentially pulled her off the roadway where she was running
and said, "Shut up, bitch," and "Give me your money." He was talking about how he had a friend in a car who
was going to be joining them and just scared the daylights out of her. From there, he has to get on the ground.
She starts to fight a little bit. And he grabs what she believed was a rock, hits her and bashes her on the head until she
stopped fighting again. MICHELLE HENDRICKS: He drags her a pretty great distance.
He tries to sexually assault her. And she's begging him not to do it. And she's telling him that she's menstruating
and that she has a tampon in. And he decides to tell her that that's not the case.
Well, she keeps talking to him. And he ends up not raping her, but he does sexually assault her.
For some reason, this victim was able to talk a lot to him. She talked about her life and she talked about her family
and she talked about her religion. And for some reason, that resonated with him, because he
engaged her in conversation. He told her what he had done to her was going to be a lot worse than what he had done to her.
But he felt like she was a Christian person. He left her there, torn clothing. And she was able to get home and get some friends
and call the police. SHAUN MCGOVERN: They ended up doing a canvas of that area. There was a Davis detective that actually tracked down the shoe
prints that were in the dirt. And they were able to photograph those shoe prints
and figure out where he had started and where he had ended. He kind of track them and figured
out the whole crime scene. So they were able to lock that down and try to gain as much evidence as they could from that scene.
PETE WILLOVER: Both newspapers and TV put out a lot on this case. And I do recall getting a lot of tips.
But we had no fingerprints, nobody who could identify. So we did not have much in the beginning
to eliminate somebody. NANCY GRACE: The serial rapist is still lurking out there,
waiting to strike again, when investigators decide to use a new crime-solving weapon,
forensic genetic genealogy. Here's how genetic genealogy works-- in this case, investigators pick up
the rapist's DNA samples from three separate rape victims. Even with that DNA, they cannot find
a match in the National database, CODIS, for possible suspects. What genetic genealogy does is expand the search.
The samples police already have may not match known suspects. But the database may identify distant relatives
of the rapist, relatives that could ultimately lead investigators to the perpetrator.
The concept is you have DNA from a crime scene. We don't know who it belongs to.
We've done everything we can to figure it out. You then take that DNA and you send it
to a laboratory to develop a special kind of DNA profile called a SNP. That gives us thousands and thousands
of points of information. That SNP profile, then, is uploaded to a public genealogy site.
Just like if I was adopted and I wanted to figure out who my biological parents were, I would get my DNA,
I'd do that SNP, and I'd upload it. And then I'd start looking to see, OK, who are my relatives?
And that's what the tree building is all about. And that's where it can become very, very
complex because sometimes you have affairs. Sometimes you have adoptions. And that makes things even more difficult.
Every case is different. And everyone, every case stands on its own. But the tree building of trying to figure out
who are the parents of this rapist, who are the cousins, who are the first cousins
and the second cousins, and that's where law enforcement and science marry up. NANCY GRACE: Officers send the evidence
to a special laboratory to develop a DNA profile suitable for genetic genealogy searching.
When law enforcement collected evidence, they collected a cushion, a seat cushion.
And ultimately, our crime lab tested that, found semen, and was able to develop a genetic profile.
And we ultimately were able to use that stain from that cushion to get what we call a SNP
to be able to do the genealogy. NANCY GRACE: A task force is created to push these cases forward.
MICHELLE HENDRICKS: I knew about that it was in the hopper, getting worked on, and that Shaun McGovern and the police
department were, along with the DA's Office, were working on the genetic genealogy aspect.
We had a meeting. We game planned a couple of things. We still didn't have a name.
NANCY GRACE: February 20, 2019-- investigators finally discover a link from a family tree.
Could this be the match that finally leads them to a serial rapist? That's next on "Bloodline Detectives."
Over 30 years after a serial rapist stalks victims in Sacramento, police are using a new forensic weapon
to ID the perp. The weapon? Genetic genealogy. And it identifies a suspect. SHAUN MCGOVERN: We get a hit on the closest ancestor,
which a lot of these databases it could be an email and a nickname. And so we have to find out who that person
is, because that's our start. So we have our suspect over here and we have our ancestral hit over here.
And gauging by how closely they're related, we calculate how far up the tree we have to go.
So in this circumstance, we had a lower hit. And so we had to go up approximately four generations.
And then we have to branch out. When we started working the other ancestor, we found out that we had the other tree.
So we had the paternal side and we had the maternal side. And so the paternal side, I worked on the paternal side,
didn't know it at the time, but got to about 600 plus names. And then Kirk Campbell and Monica Czajkowski
from the DA's Office, they ended up working the other tree. And they had over 600 names on that tree, too.
And ultimately Monica was reviewing my tree against their tree and saw a common last name,
which was unique, Manteuffel. The name that they came up with was Mark Manteuffel.
NANCY GRACE: Detectives start investigating Manteuffel's background. MICHELLE HENDRICKS: One of the things we found out
was in the early '80s, he was a security guard, loss prevention for Kmart. He went to Sac State for a little while.
He was a lecturer there. He became a federal correctional officer in 1991. And he worked for the federal system until 2011.
And he retired as an assistant warden. AMY HOLLIDAY: We were aware that he had lived in Southern
California, Oklahoma, Florida, Georgia, and some other Southern states before we
ever knew where to find him. When the advent of DNA technology and its use in the justice system
became very public and known, I think he was worried about that, because he wasn't careful
when he committed these crimes. And I know that he was worried, because after his retirement
using fake addresses, using what we call burner phones, the phones you can get at the drugstore and throw away.
So he was worried about people tracking him. He had no presence on social media and very limited
information that family members, past coworkers had about him. And so I think he was worried.
NANCY GRACE: Confident they've identified the perp, cops launch a search for Mark Manteuffel.
He's in California up until about the 2000s. And then he's scoots over to the East Coast.
And that's where his presence is over there. But he doesn't really have any information
about where he was living. He was living out of PO boxes. So most of his references were PO boxes,
which when we dug into those PO boxes, they had hotel addresses or trailer park addresses.
So who knows if he was actually living at those locations or if he was just providing a fraudulent address for the box.
But at one point, he had 13 different PO boxes spread across about three or four different states.
Ultimately, the information that we had had placed him in Decatur, Georgia within about a year or so of when
we started looking for him. So we had a good indication of where he was at. And that's where we requested the assistance of the FBI.
NANCY GRACE: June 2019, the FBI locates Manteuffel and follow him to a restaurant.
They ended up having a surveillance team following Mark Manteuffel. AMY HOLLIDAY: Some of the FBI people
were inside the restaurant. They watched him. He drank from a wine glass. He sipped water through a straw at the restaurant.
And when he left the restaurant, they collected those items of evidence. SHAUN MCGOVERN: And they protected that evidence, keep
it from being contaminated. And they ultimately shipped us to us as soon as possible.
So I ultimately got a phone call about a day and a half or two days later from the FBI saying that the evidence was here,
that it was ready to get picked up. And I immediately drove up there and brought it back
to our crime lab. NANCY GRACE: The local district attorney's crime lab calls investigators with the results.
We found out in just a few days that it was-- we had the right person. It was Mark Manteuffel.
NANCY GRACE: On June 28, 2019, an arrest warrant finally issues for Mark Manteuffel.
We got the word from the FBI that they were going to attempt to arrest him on a Friday.
So some of the detectives left Thursday morning. I left with another group of detectives Thursday
night in hopes that we would get there in time for the FBI to arrest him in the morning.
SHAUN MCGOVERN: Mark Manteuffel started to pull out when the FBI had an arrest team.
And they ended up surrounding him in front of the driveway there. From there, he was taken out of the car and put in handcuffs.
The physical evidence is collected. The DNA is matched. But now investigators must confront the suspect.
Will the suspect, Mark Manteuffel, admit to the crimes? We find out next on "Bloodline Detectives."
June 2019, Sacramento investigators interview Mark Jeffrey Manteuffel about three violent rapes
he carried out in the 1990s. I observed the interview. Detective Hendricks and Detective McGovern
conducted the interview. He was pretty quiet. He wasn't asking us why he was there.
He was more of just going with the flow. He talked a little bit about teaching at the school and his time there at Sac State.
As we started talking to him, it seemed like he was kind of fishing for what our case was
or what evidence we had against him. NANCY GRACE: Officers confront him with overwhelming DNA evidence.
When he was provided the information about the cases and why we were there, all he kept saying is,
I don't know what to say, over and over again. An innocent person would deny to high heaven
that they had anything to do with it. And all he kept saying was, I don't know what to say.
I don't have the words. I was disgusted more than anything, because look at what
you're dealing with right now. He's a 60-something year old man who, by all rights,
had a successful career to where he was able to retire in a pretty prominent position as an assistant warden
of a federal facility. He had a degree. He held down jobs. He was obviously in a relationship.
And when you're confronted with what you did, your answer is I have no words? That's despicable.
NANCY GRACE: Manteuffel formally charged and extradited to Sacramento. He was charged with sexual assault,
sodomy, kidnapping for the Sacramento case. GARRETT HAMILTON: The attacker in this case
benefited greatly from the years that he committed these crimes. Much later, in 1994, the laws in California
changed dramatically, increasing the sentences for various types of sexual offenses.
The assault in Davis was about 10 months before those laws became in effect. And as a result, even though sexual assaults
did occur in Davis, the only crime that I could charge in the case was kidnapping with the intent
to commit robbery, not rape. NANCY GRACE: The survivor of the second Sacramento rape attack
on C Street is terminally ill. She's only got months to live. Then she is granted a conditional exam.
That's when a material witness who could be unavailable to attend the trial as allowed to give evidence direct to cross-examine out of turn.
AMY HOLLIDAY: A conditional exam is usually videotaped. It's just like a trial without the jury there.
So the judge is there, the court reporter, all the court staff, the defense attorneys.
The defendant is there. This is their opportunity to ask any questions that they want of her as well.
This was the victim where the John Doe warrant really applied. All of the charges were still available to us.
And I knew that if we didn't get the conditional exam and if she passed away before the case was resolved
or went to trial that we were going to largely be out of luck. NANCY GRACE: Tragically, the C Street survivor passes away.
But facing multiple life behind bars sentences, Manteuffel agrees to a plea deal just before trial.
AMY HOLLIDAY: All the original detectives were there. I didn't know they were coming.
And they were all there-- Detective Willover, Detective Links, Detective Simmons,
and then all the new detectives as well, ones that had worked on the case more recently.
PETE WILLOVER: Eventually he pled guilty. And I did attend that hearing where he pled guilty
and was able to hear him admit his guilt to all of the counts. NANCY GRACE: Showing great courage and much strength,
Jane Doe number one goes to court and confronts her attacker. The 1992 victim and her family made a victim impact statement.
And then a friend of our 1994 victim in Sacramento also made a statement. What they spoke about was really how it's affected their lives,
the fact that they were grateful to law enforcement for solving the case, for not forgetting about the case.
The women that were assaulted in this case, if you met them you would know that they are
extraordinarily brave women. And to go through this 25, 27 years earlier, and then to go through it again once this guy was caught
is really extraordinary. And to have the fortitude to not just relive what happened,
but to confront him in a courtroom and tell their story is-- it is really truly remarkable.
NANCY GRACE: On October 23, 2020, Mark Manteuffel is sentenced to 29 years for two attacks in Sacramento.
Six weeks later, he appears in Yolo County Court for the attack in Davis County.
There, he's sentenced to another six years behind bars. Two of Mark Manteuffel's survivors
finally know the person responsible for their brutal rape is behind bars. The impact of his crimes will never be forgotten.
One of them speaks clearly about how her rape no longer will control her life. The victim in Davis decided this event was not
going to define her and that whatever control he exercised over her during the attack and whatever
control that had over her emotions and trauma in the years later was gone and that he
no longer controlled her. And she spoke very powerfully about that. NANCY GRACE: After nearly three decades
of dogged detective work, this case is finally closed. Genetic genealogy is that next fingerprint.
It's that next thing that's going to revolution-- it already is. ANNE MARIE SCHUBERT: Every day I can guarantee you that there's
somebody in the Sheriff's Department, the Police Department, and our office that
are working together to try to solve more of these crimes with this tool. NANCY GRACE: If it were not for genetic genealogy,
Mark Manteuffel would never have been identified. He would never have been prosecuted
for three vicious attacks. Painful as it may be, once again, bloodline detectives
bring closure. And for those who have committed sex assaults and think I'm safe, no one's coming for me, think again.
I'm Nancy Grace. Thank you for joining us here on "Bloodline Detectives." [THEME MUSIC]

In Sacramento, three women are brutally assaulted by the same man. Investigators use genealogy technology to track down the suspect.

A compelling new True Crime series, hosted by preeminent legal analyst and renowned former prosecutor Nancy Grace, that explores the advanced form of familial DNA testing.

Brief Summary

Three women are attacked in Sacramento; genetic genealogy helps catch their serial rapist after decades.

Key points

A Terrifying Attack. In May 1992, a woman is violently assaulted in her home, sparking a long investigation.
The Search for a Serial Rapist. Detectives link multiple attacks to a single perpetrator, revealing a pattern of violence.
Groundbreaking Forensic Advances. In 2000, investigators explore new forensic methods to catch the elusive rapist.
Genetic Genealogy Unveiled. Investigators use genetic genealogy to identify a suspect in a cold case.
Mark Manteuffel Arrested. FBI locates and arrests Mark Manteuffel, the suspect in multiple rapes.
Survivors Confront Their Attacker. Victims bravely confront Manteuffel in court, sharing their powerful stories.

Episode highlights

Episode quotes

He tells her he's going to cut her head off.

The attacker verbally abuses the victim.

3:20WatchJun 1, 2022

Tension

85/ 100High tension

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