Germany, World War II. Two English pilots are shot down and crash land behind enemy lines. The area swarming with German troops, they have only minutes to crawl from the wreckage and make their escape. Boarding a train reserved for wounded SS men on the way home from the eastern front, they ditch their clothing and personal belongings and pose as German soldiers, hiding for days in soiled, bloody beds, feigning unconsciousness. But their act is too convincing and they find find themselves being transferred to Alphabet House, a mental hospital for those damaged by war. How will they escape? And for how long can you simulate insanity without going crazy for real? They are playing a dangerous game and it seems they might not be the only ones in Alphabet House hiding secrets.