In wartime England, circa 1941, poorly-armed tugs are sent into "U-Boat Alley" to rescue damaged Allied ships. An American named David Ross arrives to captain one of these tugs. He's given a key by a fellow tugboat-man -- a key to an apartment and its pretty female resident. Should something happen to the friend, Ross can use the key.

Summary (IMDb) written by dinky-4 of Minneapolis

Part documentary and part movie, this joint BBC/History Channel Mini-Series examines "Operation Foxley", a real SOE (Special Operations Executive) plot to kill Adolph Hitler in World War II that was never carried out. This 2 part mini-series uses actors and narration, mixed with archival footage, to tell the story of the development of the plan in November of 1944. It also utilizes a modern panel of experts who hash over the entire plan, dissecting and discussing the whys and wherefores and ultimately come to their own personal decisions as to whether or not the plan should have been carried out, and why. Additionally the program draws on some personal recollections of people who were alive at the time, both British and German. The film also touches on the cross-agency conflicts between the SOE and the SIS (Secret Intelligence Service - aka MI6). The entire story is told from the point of view of "LB/X", the code name for the British Staff Officer responsible for developing "Foxley".