Sixty-two year old Philip Kimberly (as in Kim Philby) has become ""restless, discontent, a nuisance, and a drunken embarrassment"" since his defection to the Soviets a decade before. The infamous double agent is consequently given some unwanted plastic surgery and ordered back to England to recover the priceless espionage document which serves as his trump card. Commander Scaith of Her Majesty's Special Service happens to have an ace of his own--Harold Farquar--who's engaged to Kimberly's daughter Penny. The brisk double-dealing which ensues is sufficiently puzzling, but you'll find this slightly less involving than Alan Williams' Gentleman Traitor (1975).