February 1381. London lies frozen in the grip of one of the bitterest winters on record. The ever-rising taxes demanded by the Regent, John of Gaunt, are causing increasing resentment among the city's poor. When the seething unrest boils over into a bloody massacre at a splendid Southwark tavern, in which nine people, including Gaunt's tax collectors, their military escort and the prostitutes entertaining them, are brutally murdered, the furious Regent orders Brother Athelstan to get to the bottom of the matter.

June 1381. The rebel armies are massed outside London, determined to overturn both crown and church. Brother Athelstan, meanwhile, has been summoned to the monastery at Blackfriars, tasked with solving the murder of his fellow priest, Brother Alberic. Athelstan would rather be protecting his parishioners at St Erconwald's. Instead, he finds himself investigating a royal murder whilst the rebel leaders plot the present king's destruction. What does the fate of the King's great-grandfather, Edward II, have to do with the murder of Brother Alberic more than 50 years later?

February 1381. A ruthless killer known as the Ignifer - Fire Bringer - is rampaging through London. He appears to be targeting all those involved in the recent trial and conviction of the beautiful Lady Isolda Beaumont, burned at the stake for the murder of her husband. As the late Sir Walter Beaumont was a close friend of the Regent, John of Gaunt orders Sir John Cranston and Brother Athelstan to investigate. In the dead man’s possession was a copy of the mysterious Book of Fires, containing the secret formula of a devastating weapon....

October 1381. Brother Athelstan is summoned to the church of St Benet’s in Queenhithe to investigate the murder of a priest. Parson Reynaud has been found stabbed to death inside his own locked church. Other disturbing discoveries include an empty coffin and a ransacked money chest. Who would commit murder inside a holy church? Who would spirit away a corpse the night before the funeral - and who would be brave enough to steal treasure belonging to the most feared gang leader in London? 

Summer 1381. The Great Revolt has been crushed. Brother Athelstan, meanwhile, is preparing for a pilgrimage to St Thomas Becket's shrine in Canterbury to give thanks for the well-being of his congregation after the violent rebellion. But preparations are disrupted when Athelstan is summoned to the scene of a brutal triple murder.