Dr. Carlo Lombardi

Chester Morris

Acting

Andrea Talbott / Elizabeth Wetherby

Marla English

Acting

Timothy Chappel

Tom Conway

Acting

Dorothy Chappel

Cathy Downs

Acting

Dr. Ted Erickson

Lance Fuller

Acting

Police Lt. Ed James

Ron Randell

Acting

Mrs. Chappel

Frieda Inescort

Acting

Plainclothes Sgt. with Lt James

Frank Jenks

Acting

Olaf, the butler

El Brendel

Acting

Johnny, the barker

Paul Dubov

Acting

Bob, the ex-fiancé

William Hudson

Acting

Marta, the Maid

Flo Bert

Acting

Mrs. Brown

Jeanne Evans

Acting

Police Doctor with Prof. Anderson

Kenneth MacDonald

Acting

Lombardi's Lawyer

Jack Mulhall

Acting

Professor Anderson

Edward Earle

Acting

Party Guest

Bess Flowers

Acting

The She-Creature

Paul Blaisdell

Visual Effects

King the Dog

Spike

Acting