It's 1969, and Paul Dark is a young and successful MI6 agent who looks to have a bright future in the British civil service ahead of him. But then, at the height of the Nigerian civil war, a Russian agent gets in touch with the British Embassy in Lagos.
He wants to defect, and his calling card is information about yet another double agent within MI6. Already smarting from the Kim Philby and Cambridge Five revelations, MI6 has to move fast to unmask the traitor. But Paul Dark has to move faster, because he was recruited as a Russian spy by his late father.
This is an action-packed novel very much of the John le Carré school, with an intriguing and unusual premise -- an assassination attempt on British PM Harold Wilson on a visit to the troubled African state.