The Toolbox Killers were Lawrence Bittaker and Roy Norris, a duo of American serial killers active in 1979. They gained infamy for abducting, torturing, and murdering five teenage girls in Southern California. Their name comes from the use of tools, such as pliers and hammers, to carry out brutal torture on their victims. The pair recorded audio of their horrific acts, further adding to the gruesome nature of their crimes. Bittaker was sentenced to death and died in 2019, while Norris received life in prison without parole. Their case remains one of the most chilling in U.S. criminal history.