A ferociously cool Cold War thriller from the author of The Ipcress File. Len Deighton's third novel has become a classic, as compelling and suspenseful now as when it first exploded on to the bestseller lists. In Berlin, where neither side of the wall is safe, Colonel Stok of Red Army Security is prepared to sell an important Russian scientist to the West - for a price. British intelligence are willing to pay, providing their own top secret agent...