Gloria Holden as Countess Marya Zaleska

Otto Kruger as Dr. Jeffrey Garth

Marguerite Churchill as Janet

Irving Pichel as Sandor

Gilbert Emery as Sir Basil Humphrey

Edward Van Sloan as Prof. Van Helsing

Nan Grey as Lili

Halliwell Hobbes as Police Sgt. Hawkins

Billy Bevan as Police Constable Albert

E. E. Clive as Detective Sergeant Wilkes

Hedda Hopper as Lady Esme Hammond

Claud Allister as Sir Aubrey

Eily Malyon as Miss Peabody

Edgar Norton as Hobbs

Vernon Steele as Detective Orderly Squires

Joseph R. Tozer as Dr. Graham

Douglas Wood as Dr. Townsend

Fred Walton as Dr. Beemish

Paul Weigel as Transylvania Innkeeper

Hodwiga Reicher as Innkeeper's Wife

William Schramm as Zoltan - Groom in Transylvania

Agnes Anderson as Elena - Bride in Transylvania

Owen Gorin as Zoltan's Friend

Christian Rub as Coach Driver in Transylvania

Wilhelm von Brincken as Lead Transylvanian Gendarme

Edna Lyall as Nurse

Silvia Vaughan as Nurse

Douglas Gordon as Attendant

David Dunbar as Motor Bobby

John Blood as Bobby

Elsa Janssen as Wedding Guest

Bert Sprotte as Wedding Guest

Vesey O'Davoren as Butler

Eric Wilton as Butler

John Power as Police Official

George Sorel as Police Officer

Gordon Hart as Mr. Graham

Paul Mitchell as Messenger

Guy Kingsford as Radio Announcer

Clive Morgan as Desk Sergeant (uncredited)

Pietro Sosso as Priest

George Kirby as Bookstore Proprietor (uncredited)