I Deal in Danger

I Deal in Danger is a 1966 American spy film compiled from the first four episodes of a television series, Blue Light, which aired on ABCTV in early 1966. Directed by Walter Grauman, it starred Robert Goulet as David March, an Allied spy in Nazi Germany during World War II. He is aided by a French agent, Susanne Duchard, played by Christine Carre.

Elm fosters a plan to expose March by taking him to Spain to meet with a British scientist, Guy Spauling, who wants to defect to Germany. Elm knows that Spauling is a British agent. Spauling asks March to kill him, in order to validate Marchs standing with the Gestapo, but March instead uses the opportunity to frame Elm as the Blue Light agent, and kills him.Marchs goal becomes the destruction of secret Nazi weapons factory, which produces missiles for Uboats. He has romantic interludes with a German scientist, Gretchen Hoffmann Eva Pflug, working at the missile factory, convincing her to assist in his plans to blow up the facility. March and Duchard escape the destruction of the plant, but Hoffman dies in the explosion. ........

Source: Wikipedia