The highlights of the book are here. However, different people are getting credit for the different actions and thoughts than in the book.
The first half of the movie is about solving the problem of how to make the Germans in 1943 think that the invasion will take place in Portugal instead of in Sicily. If they can move just one gun or a troop, they can save lives. The solution is described as barbaric and unique.
The second half of the movie is to keep the Germans from finding out the deception. They have gone through elaborate efforts to manufacture a false identity for a courier. The Germans are interested in him and send in a spy (Steven Boyd) to find out his past.
One of the most telling scenes is while they are preparing the deception and are in a bunker; you hear the bombs and screams that remind you of the urgency and purpose of the movie.
Clifton Webb is Lieutenant Commander Ewen Montagu, the person that the movie revolves around. Gloria Grahame plays Lucy Sherwood, an alleged girlfriend. The reason she shines is that they put a lot of grease on her face and it shines in the dark.
If you saw Ben-Hur, then you may recognize Messala (Steven Boyd) as the spy sent to be sure that Martin is genuine.
And if you are an Agatha Christie Miss Marple fan, you will see that Joan Hickson is the apartment owner.
It is a great story and well told. It makes you want to find shirts with separate collars.
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