Boris Karloff as Edmond Bateman

Bela Lugosi as Dr. Richard Vollin

Lester Matthews as Dr. Jerry Holden

Irene Ware as Jean Thatcher

Samuel S. Hinds as Judge Thatcher

Spencer Charters as Col. Bertram Grant

Inez Courtney as Mary Burns

Ian Wolfe as Geoffrey 'Pinky' Burns

Maidel Turner as Mrs. Grant

Raine Bennett as Poe (uncredited)

Al Ferguson as The Crook (uncredited)

Nina Golden as Dancer (uncredited)

Jonathan Hale as Bedside Dr. at Jerry's Right (uncredited)

Arthur Hoyt as Chapman - Buyer of Poe Memorabilia (uncredited)

Walter Miller as Bedside Dr. at Judge's Right (uncredited)

Bud Osborne as Policeman (uncredited)

Madeline Talcott as Bedside Nurse (uncredited)

Cyril Thornton as Dr. Vollin's Butler (uncredited)

Anne Darling as Autograph Hound