Reparto principal

El gran impostor reparto completo

Confinado en una prisión de la costa de Maine, Ferdinand Waldo Demara Jr. (Tony Curtis) logra escapar y cambia de identidad para evitar que lo capturen. Ahora es un profesor interino de la Universidad de Harvard destinado al cuerpo de marines, pero las autoridades lo localizan gracias a la documentación que el joven se dejó olvidada durante su huida. Decidido a burlar el acoso policial, se hace pasar por un monje trapense, pero, en un descuido, sus perseguidores le dan alcance y descubren su verdadera identidad. A pesar de ser nuevamente encarcelado, el joven no se desanima. Se gana la confianza de un guardián, a quien consigue suplantar, y vuelve a huir de la cárcel. Plenamente integrado en la vida civil, concibe la idea de adoptar otra personalidad: la de un capitán médico de la Marina.

Reparto principal

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Tony Curtis

Ferdinand Waldo Demara Jr. / Martin Donner / Dr. Gilbert / Ben. W. Stone / Dr. Joseph Mornay / Robert Boyd Hammnd

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Karl Malden

Father Devlin

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Edmond O'Brien

Capt. Glover - HMCS Cayuga

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Arthur O'Connell

Warden J.B. Chandler

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Gary Merrill

Pa Demara

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Joan Blackman

Lt. Catherine Lacey

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Raymond Massey

Abbott Donner

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Robert Middleton

R.C. Brown

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Jeanette Nolan

Ma Demara

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Sue Ane Langdon

Eulalie Chandler

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Larry Gates

Cardinal

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Mike Kellin

Clifford Thompson

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Frank Gorshin

Barney

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Cindi Wood

WAC Lieutenant

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Dick Sargent

Hotchkiss

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Robert Crawford Jr.

Fred Demara Jr. (as Robert Crawford)

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Doodles Weaver

Farmer Hauling Fertilizer

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Ward Ramsey

Lieutenant Commander Howard - HMCS Cayuga

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David White

Dr. Hammond

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Philip Ahn

Capt. Hun Kim

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Herbert Rudley

Senior Officer

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Jerry Paris

Defense Lieutenant

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Harry Carey, Jr.

Dr. Joseph Mornay

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Willard Sage

Lt. Thornton

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Russ Conway

Sgt. Wilkerson (uncredited)

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James Dobson

Sailor (uncredited)

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Richard Gaines

State Official (uncredited)

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Bob Herron

Highway Patrol Officer (uncredited)

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Herbert Lytton

Reporter (uncredited)

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Frank Maxwell

Tirdell (uncredited)

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Michael Ford

Soldier (uncredited)

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Dan Sheridan

RCN Chief (uncredited)

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Charles Cane

Sheriff (uncredited)

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Gage Clarke

Mr. Warren (uncredited)

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John Cliff

Marine Major (uncredited)

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Robert Dornan

Reporter (uncredited)

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James Drake

Seaman (uncredited)

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Bob Hastings

State Department Official (uncredited)

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Dale Ishimoto

Korean Soldier (uncredited)

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Robert Kino

Korean Officer (uncredited)

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Ted Knight

Reporter (uncredited)

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Oliver McGowan

RCN Commander (uncredited)

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Don Ross

Sergeant (uncredited)

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Paul Sorensen

Guard (uncredited)

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Tom Steele

Highway Patrol Officer (uncredited)

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Warren Vanders

Minor Role (uncredited)

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Joe Gray

Federal Prison Inmate (uncredited)

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Harry Harvey Jr.

Seaman (uncredited)

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Bing Russell

Morgan (uncredited)

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