John Wayne Gacy, Jr.

Mark Holton

Acting

John Gacy, Sr.

Adam Baldwin

Acting

Tom Kovacs

Charlie Weber

Acting

Gretchen

Allison Lange

Acting

Mother Gacy

Edith Jefferson

Acting

Kara Gacy

Joleen Lutz

Acting

Young John Gacy

Scott Allen Henry

Acting

Dave

Kenneth Swartz

Acting

Stu

Matt Farnsworth

Acting

Ray

Rick Dean

Acting

Ted Boyle

Glenn Morshower

Acting

Det. Kay

John Laughlin

Acting