A police booking photo of American serial killer John Wayne Gacy on Dec. 21, 1978, at the Des Plaines Police Department. Des Plaines Police Department/Chicago Tribune/Tribune News Service via Getty ...

Between 1972 and 1978, John Wayne Gacy assaulted and murdered over 30 young men and boys. His last victim was Robert Piest , a 15-year-old boy who worked at a pharmacy in Des Plaines, Illinois.

In the last 15 years of his life, John Wayne suffered from serious health problems. A heavy smoker, he was diagnosed with lung cancer in the mid-sixties, resulting in the removal of one of his ...

A police booking photo of American serial killer John Wayne Gacy on Dec. 21, 1978, at the Des Plaines Police Department. Just before he was executed, Gacy spoke his notorious last words : "Kiss my ...