Boris Karloff

Edmond Bateman

Lugosi Béla

Dr. Richard Vollin

Lester Matthews

Dr. Jerry Holden

Irene Ware

Jean Thatcher

Samuel S. Hinds

Judge Thatcher

Spencer Charters

Col. Bertram Grant

Inez Courtney

Mary Burns

Ian Wolfe

Geoffrey 'Pinky' Burns

Maidel Turner

Mrs. Grant