In 1943, America thought it had rounded up all the German spies on its soil. It was wrong. Now the Nazi's greatest weapon - a woman with special talents, for staying alive, and for killing others - is heading home with highly classified information about the atomic bomb.
The Allies' chief defence is a British agent with an agenda of his own. Originally recruited into MI5 to pose as a double agent, he's been telling the German's he'll do anything to free his wife, a prisoner in Dachau. Just how far will he go to set her free? Where do his loyalties lie?
As the two spies play cat-and-mouse across three countries, the ambiguities deepen, until at last they are swept into a maelstrom of intrigue, danger and suspense . . .