In April 1941, Wolfgang Stahl, an American spy posing as a German SS officer, flees Germany when he senses his cover is blown. To throw the Germans off, he plants his identity papers on the body of a man who died in his house during an air raid. News of Stahl’s supposed death is brought to Stahl’s supervisor in the SS, who refuses to believe it is actually Stahl until the corpse’s hands are brought to him. Dubious, he launches a search for Stahl, who in the meantime has left Germany. News of Stahl’s death reaches Calvin “Cal” Cormack, Stahl’s liaison in the US State Department. Cormack is instructed to go to London where he will help Special Branch officer Walter Stilton track Stahl down. Unlike the shy, somewhat sheltered Cormack, who is the son of an aristrocratic isolationist congr3ssman, Stilton is a gregarious, cockney-slinging working class Englishman, the father of a large military family that includes a policewoman daughter— the rambunctious, carefree sexpot Kitty, who quickly seduces Cormack when Stilton takes him home for dinner, much to Cormack’s comical discomfort.