Michael Bonnin was 17 when he disappeared while traveling from Chicago to Waukegan and was later identified among the victims of John Wayne Gacy. He died on June 3, 1976, in Norwood Park Township, Cook County, Illinois, having been strangled with a ligature. His remains were cataloged as Body 18 and were found buried under the spare bedroom of Gacy’s home.

John Wayne Gacy, who performed as a clown in public and was convicted of 33 murders, was arrested in December 1978 after investigators connected him to the disappearance of Robert Piest; the discovery of multiple bodies in the crawl space of Gacy’s house led to his conviction and eventual execution on May 10, 1994. Bonnin’s death is one of several that highlighted earlier failures to stop Gacy despite prior accusations and arrests for sexual assault.

If anyone knew Michael Bonnin, his movements in June 1976, or has information about his disappearance, please share what you know.