
An in-depth look at some of the world's most dangerous murderers.

"Pee Wee" Gaskins escalated from a petty criminal to a murderer after a teen went missing.

In 1991, the bodies of sex workers started being discovered in Detroit, Michigan.

Dozens of Atlanta youths were killed, with Wayne Williams accused amid lingering questions.

After two couples were brutally murdered three years apart, both cases went cold for almost three decades.