Robert Berchtold managed to escape punishment for his alleged sex crimes against Jan Broberg for decades, a story being dramatized in Peacock's "A Friend of The Family."

Jeffrey Dahmer kept his victims after he killed them for sexual satisfaction, as the serial explained to his attorneys in Netflix's "Conversations With a Killer." 

Two years into his prison sentence, Jeffrey Dahmer and another prisoner were murdered by Christopher Scarver, who said the serial killer taunted him.

“Sex, Lies and the College Cult” executive producers spoke to Oxygen.com about Larry Ray, whose crimes are the subject of the Peacock series.