Mark Sievers fights death sentence. Miami model accused of murder. Plus, John Wayne Gacy mini-series.
- Oct 16, 2025
- 28:06
- Full Episode
Dennis Murphy drops by to talk about the latest in the case of Mark Sievers, sentenced to death for murdering his doctor wife. He is trying to convince a judge to give him a new trial. A pre-trial hearing for the model and social media influencer who says she fatally stabbed her boyfriend in self-defense. Plus, you've heard of serial killer John Wayne Gacy — but what do you know about his victims? A new drama series from Peacock takes a closer look.
Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com
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Brief Summary
Courtney Clenny's murder trial and Mark Seavers' case reopening are discussed, along with updates on other crime stories.
Key points
- Mark Seavers' Alibi. Mark Seavers claims he was three hours away when his wife was murdered, raising suspicions.
- Courtney Clinney's Self-Defense Claim. Influencer Courtney Clinney claims she stabbed her boyfriend in self-defense, but evidence contradicts her story.
- Donna Adelson's Sentencing. Donna Adelson, convicted of murder, claims innocence during her emotional sentencing.
- New Series on Peacock. NBC News Studios presents a new series available on Peacock, focusing on the Gacy case.
- The Victims' Stories. The show focuses on the victims and their families, rather than just Gacy.
- Detective Tovar's Haunting Reflection. Detective Tovar shares the weight of unresolved cases that still haunt him.
Episode highlights
- Mark Seavers' AlibiMark Seavers claims he was three hours away when his wife was murdered, raising suspicions.“The spouse is always a suspect until he's not.”2:58Oct 16, 2025
- Courtney Clinney's Self-Defense ClaimInfluencer Courtney Clinney claims she stabbed her boyfriend in self-defense, but evidence contradicts her story.“There's blood all around the room.”12:24Oct 16, 2025
- Donna Adelson's SentencingDonna Adelson, convicted of murder, claims innocence during her emotional sentencing.“I had no idea that other people planned to cut Danny's life short.”16:30Oct 16, 2025
- New Series on PeacockNBC News Studios presents a new series available on Peacock, focusing on the Gacy case.“Starting this week, the series will be available to watch on Peacock.”21:17Oct 16, 2025
- The Victims' StoriesThe show focuses on the victims and their families, rather than just Gacy.“We want to focus on the victims' families.”22:22Oct 16, 2025
- Detective Tovar's Haunting ReflectionDetective Tovar shares the weight of unresolved cases that still haunt him.“I still haunted by the idea that he didn't find everyone.”25:54Oct 16, 2025






