Critics score:
Reviews provided by RottenTomatoes
Bosley Crowther,
New York Times:
The film makes you believe it could have happened. And that's the remarkable thing.
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Dave Kehr,
Chicago Reader:
Grim, monotonous, and rather facile, though Richard Burton's aging agent has some honest poignancy.
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Geoff Andrew,
Time Out:
What finally impresses, however, is the sheer seediness of so much of the film, with characters, buildings, and landscapes lent convincingly grubby life by Oswald Morris' excellent monochrome camera-work.
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Variety Staff,
Variety:
An excellent contemporary espionage drama of the Cold War which achieves solid impact via emphasis on human values, total absence of mechanical spy gimmickry, and perfectly controlled underplaying.
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