Nightmare

An ex-gambler helps a beautiful widow, and becomes involved with a murder, secret agents, and saboteurs.

Diana Barrymore

Leslie Stafford aka Butch

Brian Donlevy

Daniel Shane

Henry Daniell

Capt. Edgar Stafford

Hans Conried

Hans

Eustace Wyatt

Angus

Gavin Muir

Lord J.B. Abbington

Arthur Shields

Sergeant

Stanley Logan

Inspector Robbins

Ian Wolfe

James, Abbington's butler

John Abbott

Carl aka Charles

David Clyde

Jock

Elspeth Dudgeon

Angus' wife

Harold De Becker

London Cabby

Ivan F. Simpson

Money Changer

Keith Hitchcock

London Bobby

Arthur Gould-Porter

Freddie

Anita Sharp-Bolster

Mrs. MacDonald (as Anita Bolster)

Lydia Bilbrook

Mrs. Bates