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.

London, 1654. Oliver Cromwell is at the height of his power and has declared himself Lord Protector. Yet he has many enemies at home and abroad. London is a complex web of spies and merchants, priests and soldiers, exiles and assassins. One of the web's most fearsome spiders is Damian Seeker, agent of the Lord Protector. No one knows where Seeker comes from, who his family is, or even his real name. All that is known of him for certain is that he is utterly loyal to Cromwell and that nothing can be long hidden from him.

LONDON, 1590. Queen Elizabeth I's control over her kingdom is wavering. Amidst a tumultuous backdrop of Spanish plotters, Catholic heretics and foreign wars threatening the country's fragile stability, the body of a small boy is found in the City of London, with strange marks that no one can explain. When idealistic physician Nicholas Shelby finds another body displaying the same marks only days later, he becomes convinced that a killer is at work, preying on the weak and destitute of London.  

Late October 1909, and the season of ghouls and things that go bump in the night has descended on the village of Littleton Cotterell. Lady Hardcastle and her trusted lady’s maid, Florence, find themselves hosting a colorful cast of actors whose spooky moving picture, The Witch’s Downfall, is being shown to mark Halloween. But things take a macabre turn when the first night’s screening ends with a mysterious murder, and the second night with another. One by one the actors turn up dead in ways that eerily echo their film.