When 18-year-old Anjelica 'AJ' Hadsell disappears, the investigation into her inner circle reveals a sinister betrayal.

When Nichole Payne and her son Taylor are found dead in their home, investigators wonder if this is a murder-suicide or if someone wants it to look that way. The mystery takes nearly a decade to unravel.

When 19-year-old Anton Black dies while being taken into police custody, the community seeks justice. A yearlong Dateline investigation looks at missed warning signs and the officer at the center of the case.

The investigation into a newlywed's murder starts with a widow and ends with a possible serial killer.

Detectives in Portland, OR, discover a puzzling connection between the 2018 murder of chef Dan Brophy and a blog post written years earlier titled How to Murder Your Husband.

A 40-year-old Minnesota woman is shot to death in her bed while her husband and teenage daughter are home, leaving investigators to wonder who would want her dead.

Kelsey Berreth vanishes after she was last seen grocery shopping on Thanksgiving; the case makes national headlines, but the secret behind Kelsey's disappearance is lurking much closer to home.