When London Sleeps

Harold French

Tommy Blythe

Francis L. Sullivan

Rodney Haines

Rène Ray

Mary

A. Bromley Davenport

Colonel Graham

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Alexander Field

Sam

Diana Beaumont

Hilda

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Ben Field

Lamberti

Herbert Lomas

Pollard

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David Butler

Doctor

Barbara Everest

Madame Lamberti

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James Knight

Garnett

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Harry Adnes

Jerry Balvern

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Henry B. Longhurst

Inspector Bradley

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Sam Wilkinson

Guy Renton