WATCH: John Wayne Gacy Mystery Victim Emerges After DNA Testing

Michael Marino’s mother from Chicago waited nearly 40 years for answers about her son. He was listed as one of the 33rd victim of John Wayne Gacy, but his mother, Sherry Marino, always had her doubts.

She had his body exhumed in 2011 for DNA tests. The DNA test came back showing that the body is not that of her son Michael, which means there is another unidentified Gacy victim.

John Wayne Gacy, Jr. (March 17, 1942 – May 10, 1994), also known as the Killer Clown, was an American serial killer and rapist who sexually assaulted and murdered at least 33 teenage boys and young men between 1972 and 1978 in Cook County, Illinois.