Unknown Serial Killers
Unknown Serial Killers is a TV show on Seven. The program has been available since 2026. A total of 6 episodes have been broadcast, most recently in March 2026.
Last episode
41:00
41:00Unknown Serial Killers
When the bodies of 12 Black women surface in Missouri and Illinois, the serial killer taunts authorities by sending a cryptic letter to the paper.
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41:00In the ’90s, a deranged killer stalks sex workers in Riverside, Calif., claiming the lives of 13 women.
40:00Chilling confessions from a vicious slasher detail only some of his 100+ victims. Now he's set to be released from prison.
40:00When droves of young gay men disappear in Indiana in the ’90s, an amateur sleuth uncovers clues that point to a likely killer.
41:00Five corpses are found on the Florida hog trails. The investigation stalls until two men narrowly escape the perp’s clutches.
41:00Multiple unidentified bodies are found inside barrels in a forest. Decades later, a murder miles away reveals their connection to a serial predator.