Leonard Thomas Lake (October 29, 1945 – June 6, 1985), also known as Leonard Hill and a variety of other aliases, was an American serial killer. During the mid-1980s, he and accomplice Charles Ng raped, tortured and murdered an estimated eleven to 25 victims at a remote cabin in Calaveras County, California, in the Sierra Nevada foothills 150 miles east of San Francisco. After his arrest in 1985 on illegal weapons, auto theft, and fraud charges, Lake swallowed cyanide pills that he had sewn into his clothing, and died four days later. Human remains, videotapes, and journals found at the cabin later confirmed Ng's involvement, and were used to convict Ng on eleven counts of capital murder.