

John Wayne Gacy becomes a prime suspect in teen Robert Piest's disappearance. Previously unheard audio tapes reveal Gacy's thoughts and early days.
John Wayne Gacy becomes a prime suspect in teen Robert Piest's disappearance. Previously unheard audio tapes reveal Gacy's thoughts and early days.
After a sprawling confession, Gacy starts acting erratically, forcing police to contend with both his behavior and a shifting investigation.