Unknown Serial Killers of America

Chilling confessions from a vicious slasher detail only some of his 100+ victims.

In the '90s, a deranged killer stalks sex workers in Riverside, Calif., claiming the lives of 13 women.

Five corpses are found on the Florida hog trails. The investigation stalls until two men narrowly escape the perp's clutches.

Multiple unidentified bodies are found inside barrels in a New Hampshire forest.

When the bodies of 12 Black women surface in Missouri and Illinois, the serial killer taunts authorities by sending a cryptic letter.

When droves of young gay men disappear in Indiana in the '90s, an amateur sleuth uncovers clues that point to a likely killer.