Robert Goulet plays David March, an American traitor living in Germany during World War II. Allowed to travel freely within the Nazi hierarchy, March is privy to secrets that would spell his doom were he on "our" side. What the Nazis don't know (but we do) is that March is on our side: he's a secret agent, posing as a turncoat in order to relay Nazi war plans to the allies. His main goal is to destroy a secret weapons factory, but he still has time to romance German scientist Jo Ann Pflug and French chanteuse Christine Carrere. I Deal in Danger was comprised of three half-hour episode of the 1966 TV series Blue Light; the seamwork shows at times, but the film runs a lot more smoothly than most such pastiches.