Peter Hooten

Character: Dr. Stephen Strange

Clyde Kusatsu

Character: Wong

Jessica Walter

Character: Morgan LeFay

Anne-Marie Martin

Character: Clea Lake

Philip Sterling

Character: Dr Frank Taylor, Chief of Psychiatry

John Mills

Character: Thomas Lindmer

June Barrett

Character: Sarah

Sarah Rush

Character: Nurse

Diana Webster

Character: Head Nurse

Bob Delegall

Character: Intern

Larry Anderson

Character: Magician

Blake Marion

Character: Department Chief

Lady Rowlands

Character: Mrs. Sullivan

Ines Pedroza

Character: Announcer

Michael Clark

Character: Taxi Driver

Frank Catalano

Character: Orderly

Michael Ansara

Character: The Ancient One (voice) (uncredited)

Ted Cassidy

Character: Demon Balzaroth (voice) (uncredited)

David Hooks

Character: The Nameless One (uncredited)