Mark Holton

~ as ~

John Wayne Gacy, Jr.

Adam Baldwin

~ as ~

John Gacy, Sr.

Charlie Weber

~ as ~

Tom Kovacs

Allison Lange

~ as ~

Gretchen

Edith Jefferson

~ as ~

Mother Gacy

Joleen Lutz

~ as ~

Kara Gacy

Scott Allen Henry

~ as ~

Young John Gacy

Kenneth Swartz

~ as ~

Dave

Matt Farnsworth

~ as ~

Stu

Rick Dean

~ as ~

Ray