John Wayne Gacy also known as the Clown Killer was a serial killer who was found guilty for the murder of 33 young men. He picked them up and brought them back to his house where he tortured them and after killing them buried them under the floorboards of his home or dumped in the local river.Born on March 17, 1942, in Chicago, Illinois, John Wayne Gacy faced an abusive childhood and conflict over his sexuality.

After being convicted of sexual assault in 1968, it was discovered that he had gone on to kill 33 young males, burying most under his home. He was found guilty in 1980 and given multiple death penalty and life sentences. He was executed by lethal injection on May 10, 1994.

*Safety tips similar to those for Dennis Nilsen and Jeffrey Dahmer

http://www.crimelibrary.com/serial_killers/notorious/gacy/gacy_1.html