Ronald 'Butch' DeFeo Jr.
John Robinson
Louise DeFeo
Diane Franklin
Randy Buechler
Steve Trzaska
Donna Benedettio
Rebekah Graf
Steve Pelskie
Sky Patterson
Michael Brigante
Burt Young
Dawn's Girlfriend
Sarah French
Ronald DeFeo Sr.
Paul Ben-Victor
Dawn DeFeo
Chelsea Ricketts
Marc DeFeo
Zane Austin
Allison DeFeo
Noa Brenner
Jody DeFeo
Kue Lawrence
Nona
Lainie Kazan
Officer Aiello
Eddie Alfano
Agent
Jon Mack
Line Producer
Charles Arthur Berg
Producer
Daniel Farrands
Writer
Director
First Assistant Director
Sazzy Lee Calhoun
Casting
Donald Paul Pemrick
Dean E. Fronk
Director of Photography
Carlo Rinaldi
Music
Dana Kaproff
Eric Brenner
Lucas Jarach
Executive Producer
Jim Jacobsen
Editor
Dan Riddle
Production Design
Billy Jett
Costume Design
Susan Doepner-Senac
Key Makeup Artist
Lindsey Petersen
Key Hair Stylist
Special Effects Makeup Artist