William Forsythe stars as John Wayne Gacy in this shocking drama detailing the bizarre relationship between the notorious serial killer and the clever college student who put his own sanity on the line in a bid to get the information the police couldn't. Inspired by author Jason Moss' autobiographical book THE LAST VICTIM, DEAR MR. GACY follows overachieving student Moss (Jesse Moss) as he establishes contact with the killer in prison for a classroom assignment. Determined to gain Gacy's trust, Moss assumes the role of a sheepish teen enamored with the prolific psychopath. Following a series of intensely personal phone calls in which both the writer and his subject laid bare their most intimate secrets, Moss ventures behind prison walls for a private meeting with Gacy. Little did Moss realize he was playing with fire; in his bid to manipulate Gacy into divulging untold details about his notorious murder spree, the probing student granted his twisted subject unprecedented access to his own fragile psyche - a fateful misstep that eventually cost the author his life when he committed suicide in June of 2006.