The She-Creature

Chester Morris

as Dr. Carlo Lombardi

Marla English

as Andrea Talbott / Elizabeth Wetherby

Tom Conway

as Timothy Chappel

Cathy Downs

as Dorothy Chappel

Lance Fuller

as Dr. Ted Erickson

Ron Randell

as Police Lt. Ed James

Frieda Inescort

as Mrs. Chappel

Frank Jenks

as Plainclothes Sgt. with Lt James

El Brendel

as Olaf, the butler

Paul Dubov

as Johnny, the barker

William Hudson

as Bob, the ex-fiancé

Flo Bert

as Marta, the Maid

Jeanne Evans

as Mrs. Brown

Kenneth MacDonald

as Police Doctor with Prof. Anderson

Jack Mulhall

as Lombardi's Lawyer

Edward Earle

as Professor Anderson

Bess Flowers

as Party Guest

Paul Blaisdell

as The She-Creature

Spike

as King the Dog