Edward Connell

David Fielding

Barbara Hewitt

Susan Turner

Jack Woods

Asmodeus

Frank Bonner

Jim Hudson

Robin Christopher

Vicki

James Phillips

Reporter Sloan

Fritz Leiber Jr.

Dr. Arthur Waterman

Patrick Burke

Sharon Gray

Louis Clayton

Norvelle Brooks

Irving L. Lichtenstein

James Dwion

The Orderly

Forrest J. Ackerman

Doctor (voice) (uncredited)

Jack H. Harris

Detective Harrison (uncredited)

Chuck Niles

Sloan (voice) (uncredited)