Following the vacuum created by Cromwell’s death, encouraging the restoration of the monarchy in England, the “Act of Oblivion” issued a general pardon, with a few exceptions including the “regicides” who had signed Charles l’s death warrant.  Robert Harris makes two of these real men the central characters of his novel: Ned Whalley, turned loyal soldier prepared to be ruthless in the loyal support of his cousin Cromwell, and Ned’s son-in-law Will Goffe, a devout Puritan with a passion for preaching  and a streak of fanaticism, as indicated in his unshakeable belief that the Second Coming will take place in the year 1666, as foretold in the Book of Revelation. This delusion at least makes their trials more bearable, as they endure a precarious existence on the run in the New World, with their nemesis, the fictional but plausible Richard Nayler, in unrelenting pursuit long after others have lost the taste for it, driven less by his desire to avenge the king’s execution,  than by a deep personal grudge.

The author succeeds in maintaining a continuous sense of tension and menace, so that right to the end, one is unsure whether Whalley and Goffe will escape capture, let alone survive. If the narrative sometimes lacks pace, this perhaps serves to remind us  of the inevitable tedium of being forced to lie low, often in very uncomfortable conditions, always on the alert and rarely certain of whom one can trust.

Robert Harris never misses the chance to reveal characters’ strengths and flaws, so that, wherever one’s sympathies lie in the first place, they tend to keep shifting. We see how, when they were in a position of power serving a triumphant Cromwell,  the essentially decent Whalley and Goffe were capable of being as cruel as Nayler, who in turn sometimes has unexpected flashes of compassion.  Writing a memoir to pass the time, Whalley comes to question some of Cromwell’s motives and actions, while Goffe seems rigidly set in his religious certainties. While perhaps King Charles ll and his brother James are portrayed as unremittingly debauched to the point of caricature,  even they appear worthy as they trot round London on horseback, reassuring people in the aftermath of the Great Fire.

Having dragged somewhat in places, the narrative passes too rapidly through the events of the Plague and Great Fire of London which test the faith of Will’s long-suffering wife Frances. The unpredictable, nail-biting end is also quite abrupt. Yet overall, this novel is well-constructed, wears the detailed research on which it is based quite lightly, and certainly stimulates interest in a fascinating period of our history, which could have turned out very differently. It also raises the moral dilemma of how far to go in following one’s principles, at the price of losing almost everything else which one loves or enjoys.