The Speed Freak Killers (California, 1984–1999)

Childhood friends Loren Herzog and Wesley Shermantine carried out a series of abductions and murders across California’s Central Valley, beginning in the mid-1980s. The spree lasted into the late 1990s. Nicknamed the “Speed Freak Killers” due to their methamphetamine use, they were implicated in at least four confirmed murders, though authorities suspect the real count is significantly higher. Discovery of wells and burial sites years later fueled rumors of additional victims.