Vincent Price as Dr. Warren Chapin

Philip Coolidge as Oliver 'Ollie' Higgins

Judith Evelyn as Mrs. Martha Ryerson Higgins

Darryl Hickman as David Morris

Pamela Lincoln as Lucy Stevens

Patricia Cutts as Isabel Stevens Chapin

William Castle as Prologue Host (uncredited)

Bob Gunderson as Ryerson - Screaming Convict (uncredited)

Dal McKennon as Projectionist (uncredited)

Leon Alton as Member of Silent Movie Audience (uncredited)

Gertrude Astor as Member of Silent Movie Audience (uncredited)

Richard Barthelmess as David Kinemon (archive footage) (uncredited)

Gail Bonney as Member of Silent Movie Audience (uncredited)

Pat Colby as Member of Silent Movie Audience (uncredited)

George DeNormand as Member of Silent Movie Audience (uncredited)

Amy Fields as Member of Silent Movie Audience (uncredited)

Clarence Straight as Member of Silent Movie Audience (uncredited)

Ernest Torrence as Luke Hatburn (archive footage) (uncredited)