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.
Gacy committed all of his known crimes inside his house in Norwood Park Township, near Chicago.
Now, a new book, Postmortem: What Survives The John Wayne Gacy Murders, reveals details of Piest’s last moments, as well as the investigation that led to Gacy’s arrest.
