The much-feared and hated Eudo - the Lord Bishop of Winchester's clerk - is bludgeoned to death in Pershore Abbey and laid before the altar in the attitude of a penitent. Everyone who had contact with him had reason to dislike him, but who had reason to kill him? The Sheriff of Worcestershire's thief taker, wily Serjeant Catchpoll, and his new and unwanted superior, Undersheriff Hugh Bradecote, have to find the answer. And as the walls of the abbey close in on the suspects, the killer strikes again....

Summer, 1643: England is at war with itself. King Charles I has fled London, his negotiations with Parliament in tatters. The country is consumed by bloodshed. For Thomas Hill, a man of letters quietly running a bookshop in the rural town of Romsey, knowledge of the war is limited to the rumours that reach the local inn. When a stranger knocks on his door one night and informs him that the king's cryptographer has died, everything changes.

April 1284. As a newly widowed lady-in-waiting to the very pregnant Queen Eleanor of England, Catrin never expected to return to Wales again. She was definitely unprepared to be confronted with murder when she got there - or to find herself face-to-face with Rhys, the childhood friend she lost 20 years before. Rhys had never intended to return home either, but a lifetime of war has deposited him right back where he started - impoverished and owing service to Catrin's older brother.

The king's coronation brings hope. Until a murderer strikes. Spring 1661: After years of civil war followed by Oliver Cromwell's joyless rule as Lord Protector, England awaits the coronation of King Charles II. The mood in London is one of relief and hope for a better future. But when two respectable gentlemen are found in a foul lane with their throats cut, it becomes apparent that England's enemies are using the newly re-established post office for their own ends.

Spring, 1648. When Thomas Hill, a bookseller living in rural Hampshire, publishes a political pamphlet, he has little idea of the trouble that will follow. He is quickly arrested, forced on a boat to Barbados and condemned to life as a slave to two of the island’s most notoriously violent brothers. In England war has erupted again, with London under threat of attack.

As a bard's daughter, Gwen has spent her life traveling from castle to castle and village to village with her family, following the music. In the winter of 1141, Gwen's family is contracted to provide the entertainment for the coming-of-age celebration of a lord's son. But before the celebration can begin, Gwen's father is found over the body of his friend, with a harp string as the murder weapon and blood on his hands. With the lord of the castle uninterested in finding the true killer, it is up to Gwen to clear her father's name before her father's music is silenced...forever.

December, 1380. When the corpse of Sir Robert Kilverby is discovered in a locked room, Brother Athelstan accompanies the King’s coronor to investigate. For the late Sir Robert had in his possession a sacred bloodstone which he was planning to donate to the Abbey of St Fulcher-on-Thames.

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.

It is 997 CE, the end of the Dark Ages. England is facing attacks from the Welsh in the west and the Vikings in the east. Those in power bend justice according to their will, regardless of ordinary people and often in conflict with the king. Without a clear rule of law, chaos reigns. In these turbulent times, three characters find their lives intertwined.

Gaius Petrius Ruso is a divorced and down-on-his-luck army doctor who has made the rash decision to seek his fortune in an inclement outpost of the Roman Empire, namely Britannia. After a 36-hour shift at the army hospital, he succumbs to a moment of weakness and rescues an injured slave girl, Tilla, from the hands of her abusive owner. And before he knows it, Ruso is caught in the middle of an investigation into the deaths of prostitutes working out of the local bar.

Northumberland, 1809: A beautiful young heiress disappears from her locked bedchamber at Linn Hagh. The local constables are baffled and the townsfolk cry "witchcraft". The heiress' uncle summons help from Detective Lavender and his assistant, Constable Woods, who face one of their most challenging cases.

Tied to St Mungo's Cross by the cathedral to be cured of her madness overnight by the saint, the young woman is found in the morning beaten and strangled, still tied to the cross. But is she who she seems to be? And who would flout the saint's protection like this? Gil Cunningham must trace the dead woman and find her enemies, track down the thieves and murderers and identify the watchers in the shadows, particularly the elusive fourth person who holds the secret of what happened that night. Questioning cathedral staff and apprentice boys, pilgrims and tradesmen, he uncovers only more puzzles.

When the exiled Prince Okisada, the most illustrious prisoner of the penal colony on Sado Island, is poisoned, Akitada is called upon by the emperor's envoys to investigate incognito. Posing as a prisoner, he discovers a deadly conspiracy, only to fall into the hands of brutal guards and disappear. It falls to Tora, Akitada's devoted assistant, to begin his own dangerous search of the island for his lost friend and the truth.

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.

As Black Arrow opens, Sugawara Akitada assumes his new post as provisional governor of Echigo, a frigid province in the far north notorious for its hostility to outsiders. But the snow that threatens to completely isolate the region is the least of his problems - which include a local uprising, a series of brutal murders, and a mystery that's as old as the frozen hills and a lot more dangerous.