Episode
20/20: What The Killer Left Behind
Overview
A mother's unwavering crusade for justice after her daughter's murder and the hidden clue that helped catch a killer living in plain sight.
Details
- Series
- 20/20
- Season
- Season 49
- Episode
- Episode 15
- Air date
- 2026-01-30
- Runtime
- 81 min
Episode context
What The Killer Left Behind is Episode 15 in Season 49 of 20/20. It aired on 2026-01-30. The runtime is 81 min.
Previous / Next
Episode 14: Her Last Note
When Jessie Blodgett, a talented teen musician, is murdered in her home, another young woman is brutally attacked nearby, and one link that helps police catch the killer.
Episode 16: Footprints in the Snow
In Blue Mountains, Ontario, first responders find a burned-out car with one victim inside, and the married couple who own the car are both missing. Police are left to untangle what happened as they search for answers and a possible killer.
More episodes from this season
Episode 13: The Hunt for Mr. Right
From Mr. Right to most wanted: Investigators uncover the double life of an international fugitive.
Episode 17: The Au Pair, the Affair and Murder
After a young mother is found murdered, seemingly at the hands of a home intruder, investigators uncover a far more intricate plot than the initial evidence suggests.
Episode 12: Badass Detective
A dogged detective will stop at nothing -- donning disguises, going under cover, and employing cutting edge forensics -- all to solve the murders of two young women
Episode 18: Yogurt Shop Murders
Four teen girls are found murdered in a Texas yogurt shop. Decades later, DNA evidence and advanced forensics reveal a suspected serial killer.
Episode 11: Meddler or Murderer?
A wealthy grandmother goes on trial accused in the murder-for-hire of a family member.
Episode 19: Murder at the U
When Bryan Pata, a college football player destined for the NFL, is murdered, his mother questions whether police have done enough to solve the case. 20/20 and ESPN investigate.
Episode 10: Ride or Die
After 24-year-old mother Alyssa Burkett is brutally shot and killed outside her workplace, real-time surveillance video helps detectives uncover clues that lead to a suspect whose own confession suggests a possible mastermind still at large.
Episode 20: The Vanishing of Nancy Woodrum
A wedding weekend turns into a real-life whodunit when the vacation rental's host vanishes overnight.
Episode 9: The Final Cut
A beloved hairstylist vanishes without a trace, launching a multistate investigation that ultimately uncovers a chilling trail of deception.
Episode 21: Murder, She Wrote: The Kouri Richins Trial
The shocking story of Utah mom Kouri Richins, accused of poisoning her husband and then writing a children's book about grief. The verdict is in. Her closest friend and a jury foreperson speak out