An investigation into the poisoning of Wisconsin mother Julie Jensen takes a surprising turn when detectives learn that she wrote a letter days before her death pointing to a possible suspect.

Find out the fate of Monica Sementilli, who was convicted of murdering her hairdresser husband, Fabio, in 2017.

Authorities considered the possibility that Roy had just wanted to disappear, but the Tennessee Bureau of Investigation ...

Unknown Serial Killer of America unpacks the investigation leading to prolific Indiana killer Herb Baumeister, believed to ...

Travis gave up denying his role as a serial killer while en route to police headquarters in St. Louis. Hegger found him ...

Find out more about the retrial of Karen Read, who was accused of murdering her boyfriend, Boston Police Officer John O'Keefe ...

Find out why Nick Firkus fatally shot wife Heidi Firkus in their St. Paul, Minnesota, home, what he was hiding, and how he ...

Find out what happened to Fahim Saleh, a 33-year-old tech mogul, found brutally murdered in his luxury apartment on the Lower ...

Find out what's been said about the height of accused Gilgo Beach serial killer Rex Heuermann, who's been charged in ...

Kerri Rawson, daughter of BTK Killer Dennis Rader, met with the family of accused Gilgo Beach serial killer Rex Heuermann in ...

Find out what happened to Megan Nichols, 15, who mysteriously vanished after withdrawing $200 from her family bank accounts, ...