Based on Jack Higgins electrifying World War II novel in which a Nazi impersonator is asked to recover the secret plans of the 1944 D-Day landings. Shortly before the D-Day landings Colonel Kelso, an American officer with plans of the forthcoming invasion, is washed ashore on Nazi occupied Jersey. Hearing that Kelso is still alive, the Allies ask Harry Martineau (George Peppard) to travel to Jersey, pose as a Nazi agent, and to either rescue Kelso, or silence him. Martineau is accompanied on his daring mission by the beautiful Sara Drayton (Deborah Raffin) a former resident of Jersey. Martineau's assignment becomes more complicated when Field Marshall Rommell (Michael York) appears on Jersey for an unannounced visit. Will our heroes be able to rescue Kelso and return him to England or will he pay the ultimate price?