Dean Arnold Corll (December 24, 1939 – August 8, 1973) was an American serial killer. Along with David Owen Brooks and Elmer Wayne Henley, Jr., he kidnapped, raped, tortured, and murdered at least 28 people. All of his victims were males aged 13 to 20. The killings took place between 1970 and 1973 in Houston, Texas. The crimes became known as the Houston Mass Murders. It came to light after Henley fatally shot Corll. Houston Mass Murders were considered the worst example of serial murder in American history.