Lord Donald and Lady Nancy reside in the magnificent but run-down Longleigh House with James, their mentally disabled adult son. Nancy has fallen seriously ill and Donald is preparing to sell the house to raise enough money to pay for an operation. He arranges for the family nurse, Mary, to take care of Nancy while he leaves to tend to the sale. However, James wants to prove to his father that he can look after his mother on his own and decides to lock Mary out of the house. It isn't long before James starts mixing his mother's pills and forgetting to take his own medication, and as the stress of looking after his mother increases, so too does the severity of his own condition.

The incredible true story of how a bunch of writers, artists, set designers, and back room technicians pooled their talents in order to outwit the German High Command and fool Hitler. Espionage, counterespionage, decoy airfields, inflatable tanks, guns, and soldiers are all deployed in the run up to D-Day to create a massive diversion and the strongest possible indication that the landings will be in Calais rather than Normandy. A whole invisible army is conjured up: FUSAG, the First US Army Group. Major General Patton is placed in charge of this army, such is its importance he is detained in Britain for several weeks after the Normandy landings in order to successfully convince Hitler that a second and larger set of landings will be staged in Calais.