When an actor is brutally murdered in a tavern brawl, Nicholas Bracewell, manager of Lord Westfield’s Men, has two problems: First, he has to find an immediate replacement. Second, he must keep his promise to the dying man and bring his murderer to justice. As accidents, robberies, and other misfortunes dog the company, Bracewell starts to suspect a wider conspiracy. When they receive the ultimate accolade - an appearance at the court of Queen Elizabeth - Bracewell’s forebodings grow.

In 1360 Edward III issues a call to arms, as sporadic attacks by the French threaten to turn into a full-blown invasion. In Cambridge, fear of the enemy is magnified by the belief that foreign agents are lurking in the area. Tension runs ever higher as rumours and ignorance fan the flames of suspicion amid preparations for war. And then the first murder occurs - of a French scholar living in the town.

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.

On the shocking discovery of a passenger's body on the Great Western Railway excursion train, Detective Inspector Robert Colbeck and his assistant, Sergeant Victor Leeming, are dispatched to the scene. Faced with what initially appears to be a motiveless murder, Colbeck is intrigued by the murder weapon - a noose. When it emerges that the victim had worked as a public executioner, Colbeck realises that this must be intrinsically linked to the killer's choice of weapon.

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.

December 1669. During one of the coldest winters in living memory, the Thames freezes over, and a frost fair is held on the thick ice. Architect Christopher Redmayne and puritanical constable Jonathan Bale are both visiting the fair when one of Bale's sons gets into trouble on the ice. They rescue the boy but in the process make a grim discovery - a frozen corpse....

May 1915. With thousands of Britons fighting in the trenches, a severely depleted police force remains behind to keep the Home Front safe. Scotland Yard is already overstretched when the sinking of the Lusitania sparks an unprecedented wave of anti-German riots and arson attacks. Among the victims is the immigrant tailor Jacob Stein, found dead in his burnt-out shop.

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.

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.

It is 1537, a time of revolution that sees the greatest changes in England since 1066. Henry VIII has proclaimed himself Supreme Head of the Church. The country is waking up to savage new laws, rigged trials and the greatest network of informers ever seen. And under the orders of Thomas Cromwell, a team of commissioners is sent throughout the country to investigate the monasteries.