Smith and Jones — Nicholas Monsarrat

Within the precarious conditions of the Cold War, diplomats Smith and Jones are not to be trusted. But although their files demonstrate evidence of numerous indiscretions and drunkenness, they have friends in high places who ensure that this doesn't count against them, and they are sent across the Iron Curtain. However, when they defect, the threat of absolute treachery means that immediate and effective action has to be taken. At all costs and by whatever means, Smith and Jones must be silenced.