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, September 1666. The Great Fire rages through the city, consuming everything in its path. Even the impregnable cathedral of St. Paul's is engulfed in flames and reduced to ruins. Among the crowds watching its destruction is James Marwood, son of a disgraced printer and reluctant government informer. In the aftermath of the fire, a semi-mummified body is discovered in the ashes of St. Paul's, in a tomb that should have been empty. The man's body has been mutilated, and his thumbs have been tied behind his back.

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.

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.  

Matthew Bartholomew, unorthodox but effective physician to Michaelhouse college in medieval Cambridge, is as worried as anyone about the pestilence that is ravaging Europe and seems to be approaching England. But he is distracted by the sudden and inexplicable death of the Master of Michaelhouse - a death the University authorities do not want investigated.

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.

Brother against brother. Father against son. Friends turned into enemies. No one in England wants a return to the bloody days of the Civil War. But Oliver Cromwell’s son, Richard, has abandoned his exile and slipped back into England. The consequences could be catastrophic. James Marwood, a traitor’s son turned government agent, is tasked with uncovering Cromwell’s motives. But his assignment is complicated by his friend - the regicide’s daughter, Cat Lovett - who knew the Cromwells as a child and who now seems to be hiding a secret of her own about the family.

Salisbury, 1226. A young pregnant woman is found tangled in reeds in the river Avon, her identity a mystery. Grieving widow Ela Longespée is determined to succeed her husband as sheriff of Salisbury, and quickly takes charge of the investigation. She soon finds herself in the thick of a neighborhood scandal and a struggle to maintain her authority. With multiple suspects, can she identify the true killer? 

Hugh of Singleton, fourth son of a minor knight, has been educated as a clerk, usually a prelude to taking holy orders. However, feeling no certain calling despite a lively faith, he turns to the profession of surgeon, training in Paris and then hanging out his sign in Oxford. A local lord asks him to track the killer of a young woman whose bones have been found in the castle cesspit. She is identified as the impetuous missing daughter of a local blacksmith, and her young man, whom she had provoked very publicly, is in due course arrested and sentenced at the Oxford assizes.

Oxford, 1583. Giordano Bruno, a radical thinker fleeing the Inquisition, is sent undercover to Oxford to expose a Catholic conspiracy against Queen Elizabeth. But he has his own secret mission at the University, which must remain hidden at all costs. When a series of hideous murders are committed, Bruno is compelled to investigate. What he finds makes it brutally clear that the Tudor throne itself is at stake....

One psychopath. One killer. The Stabber. Six victims, all wife beaters. Each stabbed to death through their left eye. Six victims, all wife beaters. Each stabbed to death through their left eye. The cobbled lanes and backstreets of St Andrews provide the setting for these brutal killings.

At the May Day dancing at Glasgow Cross, Gil Cunningham sees not only the woman who is going to be murdered, but her murderer as well. Gil is a recently qualified lawyer whose family still expect him to enter the priesthood. When he finds the body of a young woman in the new building at Glasgow Cathedral he is asked to investigate, and identifies the corpse as the runaway wife of cruel, unpleasant nobleman John Semphill. With the help of Maistre Pierre, the French master-mason, Gil must ask questions and seek a murderer in the heart of the city.

It is December, 1648, and England faces one of the greatest crises in its history. Bands of renegade soldiers and broken men roam the countryside, looting, burning, and raping. In Parliament, former allies are torn apart after six years of bloody conflict. John Swynfen, a rising young MP and one of the leaders of the moderate party, is working for peace, but only if safeguards can be established to protect Parliament and control the powers of the king. Ranged against him and his friends are Oliver Cromwell and his son-in-law Henry Ireton, intent on seizing power by the sword.

It is the year of our Lord 1363. And in the cathedral city of York people are dying in mysterious circumstances. But there seems to be a common thread - the herbal remedies dispensed by Nicholas Wilton, Master Apothecary. The first victim is an anonymous pilgrim. But when a highborn nobleman dies after taking the same potion the authorities decide to act. Dispatched to York, in disguise, to unravel the mystery, Owen Archer, former Captain of Archers, apprentices himself to the Apothecary.

The date is 1191. Aumary Belvoir is 17. Seventeen and bound by an oath so holy, he dare not break it. Unexpectedly thrust into the position of the warden of the Savernake, a woodland of 150 square miles in Wiltshire, will Aumary succeed in stamping his authority on the forest? He has also acquired a half brother he did not know he had. With the help of his experienced staff and his willing family, things go well. The surprise brother, Robert, proves a worthy assistant. Then the deaths begin.