In the 1960s, Eric Edgar Cooke murdered at least eight people in Perth and sometimes even dabbled in necrophilia — until he was finally caught.

Shawn Grate stalked northern Ohio between 2006 and 2016, slaughtering women after sexually assaulting them. He's now on death row, awaiting execution — thanks to one would-be victim's bravery.

In 1974, Randall Woodfield was drafted and quickly dropped by the Green Bay Packers. Just a few years later, he went on a brutal murder spree — killing up to 44 people.

Between 1987 and 1991, a masked attacker known only as Mr. Cruel broke into the homes of three Australian families, bound the parents, and disappeared with one of the daughters.

Idaho teenagers Brian Draper and Torey Adamcik plotted the murder of Cassie Jo Stoddart for weeks in an effort to "be just like 'Scream.'"

On December 18, 1994, Alison Botha was abducted near her home in South Africa. By the end of the night, she had been raped, stabbed, and disemboweled — but she was still alive.

From 1975 to 1998, serial killer Harold Shipman used his position as a trusted family physician to murder as many as 250 of his patients by lethal injection.

After Erin Caffey’s parents told her she couldn’t see her boyfriend anymore, she sought revenge — by having them all brutally murdered in their sleep.

Until his arrest in 2015, Peter Scully recorded himself torturing and sexually abusing young girls for thousands of dollars on his pay-per-view dark web site "No Limits Fun."

On February 17, 2014, 14-year-old Breck Bednar secretly met 18-year-old Lewis Daynes at his apartment in England. Bednar was found dead the next day.