Horse Under WaterThe unnamed spy of The IPCRESS File uncovers a secret buried deep in a Nazi U Boat A sunken U Boat has lain undisturbed on the Atlantic ocean floor since the Second World War until now. Inside its rusting hull, among the corpses of top rank Nazis, lie secrets people will kill to obtain. The sequel to Len Deighton's game changing debut The IPCRESS File, Horse Under Water sees its nameless, laconic narrator sent from fogbound London to the Algarve,