Cast

Gordon Harker

Inspector Hornleigh

Alastair Sim

Sergeant Bingham

Phyllis Calvert

Mrs. Wilkinson

Edward Chapman

Mr. Blenkinsop

Charles Oliver

Dr. Wilkinson

Raymond Huntley

Dr. Kerbishley

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Percy Walsh

Inspector Blow

David Horne

Commissioner

Peter Gawthorne

Colonel

Wally Patch

Sergeant Major

Crew

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Alex Vetchinsky

Art Direction (Art)

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R. E. Dearing

Editor (Editing)

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Louis Levy

Music (Sound)

Walter Forde

Director (Directing)

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Edward Black

Producer (Production)

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Jack E. Cox

Director of Photography (Camera)

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Arthur Crabtree

Director of Photography (Camera)

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Charles Williams

Original Music Composer (Sound)

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John P. Wynn

Characters (Writing)

Val Guest

Writer (Writing)