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.

After Culloden, Iain MacGillivray was left for dead on Drumossie Moor. Wounded, his face brutally slashed, he survived only by pretending to be dead as the Redcoats patrolled the corpses of his Jacobite comrades. Six years later, with the clan chiefs routed and the Highlands subsumed into the British state, Iain lives a quiet life, working as a bookseller in Inverness. One day, after helping several of his regular customers, he notices a stranger lurking in the upper gallery of his shop, poring over his collection. But the man refuses to say what he's searching for.

The year is 1018 and the war with England is finally over, but the unified kingdom ruled by Cnut of Denmark is far from peaceful. Halfdan has lost everything to the war but his sense of humor. Once a proud nobleman, now he wanders the country aimlessly powered only by his considerable charm and some petty theft. When he finds an unlikely ally in Winston, a bookish former monk, the two set out together for Oxford, the seat of the new king.

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.

In 1482 the Englishman Thomas Berrington is living in the last remnants of Moorish Spain. A physician, he is an unwilling friend to the most powerful man in the kingdom. When bodies start to turn up, each showing the marks of a savage attack, Thomas is asked to investigate.