Vincent Price

Dr. Warren Chapin

Philip Coolidge

Oliver 'Ollie' Higgins

Judith Evelyn

Mrs. Martha Ryerson Higgins

Darryl Hickman

David Morris

Pamela Lincoln

Lucy Stevens

Patricia Cutts

Isabel Stevens Chapin

William Castle

Prologue Host (uncredited)

Bob Gunderson

Ryerson - Screaming Convict (uncredited)