Laird Cregar as George Harvey Bone

Linda Darnell as Netta Longdon

George Sanders as Dr. Allan Middleton

Glenn Langan as Eddie Carstairs

Faye Marlowe as Barbara Chapman

Alan Napier as Sir Henry Chapman

J.W. Austin as Det. Insp. King (uncredited)

Ted Billings as Pub Patron (uncredited)

Clifford Brooke as Night Watchman in Square

Ann Codee as Netta's Maid Yvette (uncredited)

Charles Coleman as Man at Bonfire (uncredited)

Michael Dyne as Mickey (uncredited)

Francis Ford as Ogilby - Fulham Antique Dealer (uncredited)

Leyland Hodgson as Det. Sgt. Lewis (uncredited)

J. Farrell MacDonald as Street Vendor (uncredited)

Eric Wilton as Waiter (uncredited)

Frederick Worlock as Supt. Clay (uncredited)

Harry Allen as

Radford Allen as

Jimmy Aubrey as

Wilson Benge as

Frank Benson as

Bob Burns as

Steve Carruthers as

Jack Chefe as

James Conaty as

Harold de Becker Jr. as

Leslie Denison as

Alan Edmiston as

Nestor Eristoff as

Franklyn Farnum as

John Goldsworthy as

Bobby Hale as Pub Patron (uncredited)

Art Howard as

Charles Irwin as

Michael Jeffers as

Charles Knight as

George Leigh as

David Leland as Boy (Uncredited)

Connie Leon as

Wilbur Mack as

Thomas Martin as

Pat McKee as

John Rogers as

Constantine Romanoff as

Sam Savitsky as

Leslie Sketchley as

Mabel Smaney as

Val Stanton as

Count Stefenelli as