The Man Who Never Was1956

Lieutenant Commander Ewen Montagu:
If we turn up at that address, it could only mean that we've been tipped off, and that the whole Martin story is a plant. This man will have committed suicide, but Jerry will know the answer, and our operation will be blown. I'm sorry, sir, but we mustn't touch him. We daren't.

General Coburn:
You mean till after we think he's got a message through.

Lieutenant Commander Ewen Montagu:
No sir, right up to the time of the landings. Because the fact that there have been no further messages from him might give the game away.

General Coburn:
You realize he'll probably be out of the country in a couple of days.

Lieutenant Commander Ewen Montagu:
Yes, and we must let him go. After all, he's done us no harm.

General Coburn:
Masterly inactivity!

Lieutenant Commander Ewen Montagu:
"They also serve who only stand and wait."