John Carradine

Dr. Charles Conway

Myron Healey

Mark Houston

Allison Hayes

Grace Thomas

Marilyn Buferd

Dr. Sharon Gilchrist

Tor Johnson

Lobo

Arthur Batanides

Danny Green

Sally Todd

Natalie Andries

Harry Fleer

Harry Jedrow

Roy Gordon

Dr. Loren Wright

Guy Prescott

Police Captain George Reagan

Raymond Guth

Police Officer Miller

Paul McWilliams

Police Officer Ed

Gloria Petroff

Screaming Woman

Karl Johnson

Monster in Basement (uncredited)

Harry Wilson

Monster in Basement (uncredited)

Boris Petroff

Director

Jane Mann

Screenplay

John D.F. Black

Screenplay

Boris Petroff

Producer

Daniel Hall

Art Direction

Jane Mann

Original Story

Henry Vars

Original Music Composer

Betty Sinclair

Production Manager

Mowbray Berkeley

Set Decoration

Robert A. Terry

Associate Producer

W. Merle Connell

Director of Photography

Harry Thomas

Makeup Designer

W.T. Zacha

Wardrobe Supervisor

Philip Mitchell

Sound

Paul Grancell

Electrician

Art Manikin

Grip

Tony Portoghese

Property Master

Ben Wetzler

Camera Operator

Richard C. Currier

Supervising Editor

Michael Terr

Music Supervisor