Forensic Files

The Sneak Attack on Katlyn Lyon | Full Episode + Post Mortem

48 Hours

  • Mar 1, 2026
  • 1:05:06
  • Full Episode

Watch "The Sneak Attack on Katlyn Lyon" and then catch up with 48 Hours correspondents Anne-Marie Green and Erin Moriarty on "Post Mortem" as they discuss the case that went viral on TikTok.

00:00 The Sneak Attack on Katlyn Lyon 42:19 Watch the Post Mortem podcast

Crime. Social justice. Impact. "48 Hours" investigates the most intriguing crime and justice cases that touch on all areas of the human experience including greed and passion. "48 Hours," which premiered in 1988, has developed a rich history of original reporting and impact journalism that has helped exonerate wrongly convicted people, caused cold cases to be reopened and solved, and along the way changed lives.

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Brief Summary

Caitlin Lyon Montgomery was murdered, leading to a trial that revealed stalking and domestic violence issues involving her ex-boyfriend Trenton Fry.

Key points

  • The Tragic Incident. Caitlin was found unresponsive, leading to a shocking revelation about her fate.
  • The Investigation Begins. Initial thoughts of overdose shift as investigators uncover signs of foul play.
  • The Search for Justice. Caitlin's family vows to seek justice and uncover the truth behind her death.
  • Unraveling Relationships. Caitlin's relationships come under scrutiny as investigators look for suspects.
  • Caitlyn's Murder. Caitlyn was brutally attacked in her sleep, leaving her daughter nearby.
  • Trenton Fry's Arrest. Fry was taken into custody after denying involvement in Caitlyn's death.

Tension

85/ 100High tension

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The Sneak Attack on Katlyn Lyon | Full Episode + Post Mortem | Forensic Files