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.