Whit Bissell

Character: Prof. Frankenstein

Phyllis Coates

Character: Margaret

Robert Burton

Character: Dr. Karlton

Gary Conway

Character: Bob / Teenage Monster

George Lynn

Character: Sgt. Burns

John Cliff

Character: Sgt. McAffee

Marshall Bradford

Character: Dr. Randolph

Claudia Bryar

Character: Arlene's Mother

Angela Austin

Character: First Victim

Russ Whiteman

Character: Dr. Elwood

Charles Seel

Character: Mr. Sexton, the jeweler

Paul Keast

Character: Man at Crash

Gretchen Thomas

Character: Woman in Corridor

Patrick Miller

Character: Police Officer (as Pat Miller)

Joy Stoner

Character: Arlene

Larry Carr

Character: Young Man (uncredited)

George DeNormand

Character: Party Guest (uncredited)

James Gonzalez

Character: Party Guest (uncredited)

Frank McLure

Character: Party Guest (uncredited)

William H. O'Brien

Character: Rooming House Boarder (uncredited)

Norman Stevans

Character: Party Guest (uncredited)

Arthur Tovey

Character: Party Guest (uncredited)