Molly Keatley is content with her comfortable life in a London suburb. But that changes one morning when her husband rushes home, grabs a briefcase, mutters a hasty apology and disappears. Minutes later, two men arrive with news that her husband is a Soviet spy, and that the sleepy joys of her marriage have acted as a cover for public and personal betrayal. Her husband, it seems, has spent years using her for his own purposes, and now the British intelligence service wants to use her for theirs. But the shock of Sam's betrayal has woken Molly out of her complacent dream, and she is no longer willing to be anybody's pawn.