Learn what happened to librarian Andrea Cincotta, whose fiancé called 911 to report he’d found his longtime love’s body in a ...

After a mother is found murdered in her Virginia home, her son embarks on a 20-year quest for justice. For Josh Mankiewicz, ...

When 77-year-old Catherine Miller is found dead, investigators make a shocking revelation about who her killer might be.

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

Find out what the jury foreman said about the decision to acquit Karen Read in the death of her boyfriend, John O'Keefe.

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 ...

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.

When an 11-year-old boy finds his mother brutally slain in their suburban Atlanta condo, detectives begin a desperate search to find the woman’s killer, only to discover that this murder is the work ...

Watch Kill or Be Killed on Oxygen Saturdays at 9/8c. Catch up on the Oxygen app. Alone with her three children — sons Bert, 11, and Noah, 3, and 2-year-old-daughter Mason — Tracey told authorities she ...