It is February, 1942.
Ken Rowe is recalled from North Africa to London. He is in hot water with MI6 but still favored by Churchill who wants him to head to Bordeaux where a woman in the French Resistance was recently stripped and hung in the streets for all to see. Her capture came because someone in that group was obviously a mole and a traitor. This is especially bad for England since that group was also key in monitoring U-Boat activity in the region. Rowe is sent to find the mole.