Cast

George Murphy

Inspector James 'Jim' Belden

Finlay Currie

Professor Albert Kafer

Virginia Gilmore

Millie / Teresa Zalenko

Karl Stepanek

Alexi Laschenkov / Gregory Anders

Louisa Horton

Mrs. Elaine Wilben

Peter Capell

Chris Zalenko / Gino

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Bruno Wick

Luther Danzig

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Vilma Kurer

Mrs. Rita Foss

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Ann Thomas

Philadelphia Suspect

George Roy Hill

Nicholas Wilben

Crew

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Joseph C. Brun

Director of Photography (Camera)

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Louis Applebaum

Original Music Composer (Sound)

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Leo Rosten

Story (Writing)

J. Edgar Hoover

Writer (Writing)

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Angelo Ross

Editor (Editing)

Alfred L. Werker

Director (Directing)

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Leo Rosten

Screenplay (Writing)

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Louis De Rochemont

Producer (Production)

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George Stoetzel

Camera Operator (Camera)

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Herbert Andrews

Art Direction (Art)