Murderabilia – Notorious Serial Killer - John Wayne Gacy (1942-1994) Original ‘Christ’ Oil Painting - J.W. Gacy and Christ to the front and signed to the reverse by Gacy, oil on canvas, measures 25.4x35.5cm – depicts Christ. Note: John Wayne Gacy was an American serial killer who sexually assaulted, tortured and murdered at least 33 teenaged boys and young men between 1972 and 1978.