He was the best source the Department ever had, but now he desperately wanted to come over the Wall. 'Brahms Four' was certainly a high-ranking mole, set to betray him. There was only one Englishman he trusted any more: someone from the old days. So they decided to put Bernard Samson back into the field after five sedentary years of flying a desk. The field is Berlin. The game is as baffling, treacherous and lethal as ever...