Mission: Possible? (spoiler)
One reviewer mentions that this anticipates Mission: Impossible. In fact this same plot device is used in the 3rd ever episode of MI:
http://www.imdb.com/title/tt0649262/
That's also very good.
Of course, you keep wondering if this could be pulled off. I wondered if he had a pimple that might not have healed. It turned out to be something similar. But you've got to take everything with a grain of salt if you are going to enjoy these shows.
It's interesting that James Garner went from one film about D-Day, ("The Americanizaition of Emily"), to another. The films really don't contradict eachother as they are about different things, (the first was a black comedy with a lot of preaching about war and heroism: this is more a psychological study). But one wonders what would happen if the Germans had captured Charlie Madison by mistake.