It is 1537, a time of revolution that sees the greatest changes in England since 1066. Henry VIII has proclaimed himself Supreme Head of the Church. The country is waking up to savage new laws, rigged trials and the greatest network of informers ever seen. And under the orders of Thomas Cromwell, a team of commissioners is sent throughout the country to investigate the monasteries.

England, 1176. Aelred Barling, esteemed clerk to the justices of King Henry II, is dispatched from the royal court with his young assistant, Hugo Stanton, to investigate a brutal murder in a village outside York. The case appears straightforward. A suspect is under lock and key in the local prison, and the angry villagers are demanding swift justice. But when more bodies are discovered, certainty turns to doubt - and amid the chaos it becomes clear that nobody is above suspicion.

Oxford, Spring 1353. When young bookseller Nicholas Elyot discovers the body of student William Farringdon floating in the river Cherwell, it looks like a drowning. Soon, however, Nicholas finds evidence of murder. Who could have wanted to kill this promising student? As Nicholas and his scholar friend Jordain try to unravel what lies behind William's death, they learn that he was innocently caught up in a criminal plot.

1296: King Edward I has led his army to Scotland, determined to take the country under his crown. But the fierce Scots have no intention of submitting to their oppressor and violent and bloody war breaks out. 1311: Sir Hugh Corbett, Keeper of the Secret Seal, finds himself back in Scotland and is revisited by the horrors he witnessed there 15 years ago. An anonymous letter was delivered to the new king. It promised information about a fatal incident that could allow England to finally bow out of the war with the Scots. Tasked with finding out the truth about the murder, Corbett is forced to take risks he would rather avoid and put his faith in the words of strangers. 

To escape a lifetime of poverty, mercenary Sir Benedict Palmer agrees to one final, lucrative job: help King Henry II's knights seize the traitor Archbishop Thomas Becket at Canterbury Cathedral. But what begins as a clandestine arrest ends in cold blooded murder. And when Fitzurse, the knights' ringleader, kidnaps Theodosia, a beautiful young nun who witnessed the crime, Palmer can sit silently by no longer.