O.S.S.OverviewFrank Hawthorne is an agent in World War II's Office of Strategic Services (O. S. S.), the U. S.'s spy agency. He operates behind German lines in France with the assistance of the French Resistance and his assistant, Sergeant O'Brien.First airedSeptember 26, 1957URL slugo-s-sGenresDramaWarArtworkNo imagePosterNo imageBackgroundNo imageIconNo imageBannerSeasonsSpecials0 episodesSeason 126 episodesCast & crewCastRon Randell