In AD 664 King Oswy of Northumbria has convened a synod at Whitby to hear debate between the Roman and Celtic Christian Churches and decide which shall be granted primacy in his kingdom. At stake is much more than a few disputed points of ritual; Oswy's decision could affect the survival of either Church in the Saxon kingdoms. When the Abbess Etain, a leading speaker for the Celtic Church, is found murdered, suspicion falls upon the Roman faction.

Cadfael's return to his Welsh homeland for a visit proves a rather discomfiting homecoming when an honorable nobleman turns up in a patch of forest with an arrow embedded in his chest. There are questions about the arrow, the man's daughter needs Cadfael's help, and a very odd burial takes place.

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.

Spring, 1918. The Great War is at a crucial stage, the Germans are making one last push into France, and the Allies are struggling to hold them back. Battle lines are shifting, and men, and their machines, are being sent up and down the front to shore up defenses. Major Heathcliff Lennox, and his batman Greggs, are told to report to their new HQ. They set off on a sunlit day to fly the distance, but the enemy is never far away, and disaster strikes. They're sent crashing to the ground behind enemy lines, where life, death, and love await.

In the fair autumn of Our Lord's grace 1431, the nuns of England's St. Frideswide's prepare for the simply ceremonies in which the saintly novice Thomasine will take her holy vows. But their quiet lives of beauty and prayer are thrown into chaos by the merciless arrival of Lady Ermentrude Fenner and her retinue of lusty men, sinful women, and baying hounds. The hard-drinking dowager even keeps a pet monkey for her amusement. She demands wine, a feast.... And her niece, the angelic Thomasine.

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?

England. 1191. After the death of her friend and patron, King Henry II, Adelia Aguilar, England's vaunted Mistress of the Art of Death, is living comfortably in retirement and training her daughter, Allie, to carry on her craft—sharing the practical knowledge of anatomy, forensics, and sleuthing that catches murderers. Allie is already a skilled healer, with a particular gift for treating animals. But the young woman is nearly twenty, and her father, Rowley, Bishop of Saint Albans, and his patron, the Queen Eleanor of Aquitaine, have plans to marry Allie to an influential husband.

At the end of her first unsuccessful season out in society, Lady Georgiana has all but given up on attracting a suitable man - until she receives an invitation to a masked Halloween ball at Broxley Manor. Georgie is uncertain why she was invited, until she learns that the royal family intends to marry her off to a foreign prince, one reputed to be mad.

Lady Emily Hardcastle is an eccentric widow with a secret past. Florence Armstrong, her maid and confidante, is an expert in martial arts. The year is 1908 and they've just moved from London to the country, hoping for a quiet life. But it is not long before Lady Hardcastle is forced out of her self-imposed retirement. There's a dead body in the woods, and the police are on the wrong scent. Lady Hardcastle makes some enquiries of her own, and it seems she knows a surprising amount about crime investigation...

Northern Ireland, spring 1981. Hunger strikes, riots, power cuts, a homophobic serial killer with a penchant for opera, and a young woman’s suicide that may yet turn out to be murder: on the surface, the events are unconnected, but then things—and people—aren’t always what they seem. Detective Sergeant Duffy is the man tasked with trying to get to the bottom of it all. It’s no easy job—especially when it turns out that one of the victims was involved in the IRA but was last seen discussing business with someone from the loyalist Ulster Volunteer Force.

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.

In medieval England, four children have been murdered, and the townsfolk blame their Jewish neighbors. The doctor chosen to investigate is a woman, Adelia. As she examines the victims and retraces their last steps, she must conceal her true identity in order to avoid accusations of witchcraft. Along the way, she's assisted by Sir Rowley Picot, a man with a personal stake in the investigation. A former Crusader knight, Rowley may be a needed friend - or the fiend for whom they are searching.

Raised and trained in seclusion at a secret fortress on the edge of the northern wilds of the Kingdom of Ashai, a young warrior called Rezkin is unexpectedly thrust into the outworld when a terrible battle destroys all that he knows. With no understanding of his life’s purpose and armed with masterful weapons mysteriously bestowed upon him by a dead king, Rezkin must travel across Ashai to find the one man who may hold the clues to his very existence.

It is the early spring of 2016 and Queen Elizabeth is at Windsor Castle in advance of her 90th birthday celebrations. But the preparations are interrupted when a guest is found dead in one of the Castle bedrooms. The scene suggests the young Russian pianist strangled himself, but a badly tied knot leads MI5 to suspect foul play was involved. The Queen leaves the investigation to the professionals—until their suspicions point them in the wrong direction. Unhappy at the mishandling of the case and concerned for her staff's morale, the monarch decides to take matters into her own hands.

Born the bastard son of a Welsh princess, Myrdden Emrys - or as he would later be known, Merlin - leads a perilous childhood, haunted by portents and visions. But destiny has great plans for this no-man's-son, taking him from prophesying before High King Vortigern to the crowning of Uther Pendragon, and the conception of Arthur, king for once and always.