A British ambassador finds his life in peril when he discovers a Russian mole operating within his own trusted inner circle. Mark Lowrey must navigate a treacherous landscape of suspicion and betrayal, attempting to identify his would-be assassin before they strike. As he scrutinizes his friends and professional associates, the narrative maintains a high-stakes atmosphere of paranoia. The story unfolds through a tense, third-person perspective that emphasizes the isolation of a man who can no longer distinguish between ally and enemy.

This novel reflects the classic tropes of Cold War espionage fiction, where the primary conflict stems from the erosion of trust within elite circles. The narrative structure relies heavily on the tension inherent in the 'mole hunt' subgenre, forcing the reader to constantly re-evaluate the motivations of secondary characters. The prose emphasizes the clinical, detached nature of diplomatic life, which contrasts sharply with the lethal intent of the antagonist. The work serves as a representative example of 1970s suspense writing, prioritizing atmospheric dread over explosive action sequences.