Follow me into 1929.

The mysterious case of 16 year old Theresa Ann Bier, who disappeared into the Sierra Nevada Mountains without a trace in 1987.

Nearly 80 years later, the murder of Elizabeth Short remains one of Los Angeles’s most famous cold cases.

England’s most notorious serial killer.

The unidentified woman found burned alive during the Cold War in Isdalen, Norway. Who was she, really? A spy, or just a mysterious woman running from her past?

Tonight’s episode is a 13 Days of Halloween Double Feature!

This unidentified Italian serial killer has yet to be identified nearly four decades after his last confirmed murder.

The anonymous letters sent to Circleville, Ohio residents began in 1976, yet the writer has never been found. Will 2023 be the year we finally put a name this mysterious cipher?

The 1974 murder of Ruth Marie Terry, who remained unidentified until 2022.

The curious 1922 case of the reappearing Breton toddler, Pauline Picard.