It Takes a Thief (1968) - 2x07 - Hans Across the Border (1)- Followmy.tv

Hans Schiller, the most important direct intelligence link to East Berlin, is arrested on the U.S. side of the East-West Berlin border crossing. He was set up by Heinrich, who suspects he is a double agent, called ""Centaur"", and he is right. Schiller has documents in his safe that can expose the entire Eastern European espionage network. Noah doesn't want Schiller exposed as a double agent, so he wants Al to retrieve the documents from Schiller's safe. As his cover, Al marries General Levin's daughter, Corey, and is smuggled into East Germany as a downed Air Force pilot. Al gets captured by Heinrich, has to break out of East Germany's security headquarters, get to Schiller's safe and get back into security headquarters, without them knowing, and Noah is undercover to negotiate Al's release.