Patric Curwen

饰：Dr. Lomond

帕特里克·巴尔

Patrick Barr

饰：Det. Insp. Alan Wembury

乔治·梅里特

George Merritt

饰：Police Station Sergeant

Arthur Hambling

饰：Detective Sergeant Richards

威尔弗里德·劳森

Wilfrid Lawson

饰：Maurice Meister

路易丝·亨利

Louise Henry

饰：Cora Ann Milton

帕特里西亚·罗克

Patricia Roc

饰：Mary Lenley

Charles Eaton

Charles Eaton

饰：Colonel Walford

Sonnie Hale

饰：Samuel Cuthbert 'Sam' Hackett

彼得·克劳夫特

Peter Croft

饰：John Lenley

富兰克林·迪亚尔

Franklin Dyall

饰：Maurice Meister

Carol Goodner

饰：Cora Ann Milton

戈登·哈克

Gordon Harker

饰：Samuel Hackett

埃斯蒙德·奈特

Esmond Knight

饰：John Lenley

Arthur Stratton

Arthur Stratton

饰：Sgt. Carter

Henry Hallett

饰：Inspector Bliss

Dorothy Bartlam

Dorothy Bartlam

饰：Mary Lenley

Kathleen Joyce

Kathleen Joyce

饰：Gwenda Milton

约翰·朗登

John Longden

饰：Inspector Wembury

Eric Stanley

饰：Commissioner

亚历山大·诺克斯

Alexander Knox

饰：Bit Role (uncredited) (unconfirmed)

Eric Noels

饰：PC Field

加里·马什

Garry Marsh

饰：Central Det. Insp. Bliss

Ivor Barnard

饰：Samuel Hackitt

Henry Oscar

饰：Dr. Lombard

Lydia Sherwood

饰：Mary Lenley

Norman Claridge

饰：John Lenley

Peter Ashmore

饰：Benny

Reginald Peldon

Reginald Peldon

饰：Policemen

D.A. Clarke-Smith

Richard George

饰：Policemen

Ernest Jay

饰：Samuel Hackitt

朱迪·凯利

Judy Kelly

饰：Cora Ann Milton (1939 version)

杰克·利夫西

Jack Livesey

西塞尔·帕克

Cecil Parker

拉尔夫·杜鲁门

Ralph Truman

饰：Central Det. Insp. Bliss (29th August 1939 showing)

阿罗德·沃伦德

Harold Warrender

饰：Divisional Det. Insp. Wembury (1939 version)

沃利·帕奇

Wally Patch

马乔里·罗德

Marjorie Rhodes

Gina Malo

饰：Cora Ann Milton

Phyllis Morris

饰：Mrs. Hackitt (1939 version)