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.

Drake: Shakespeare is ordered to protect him. With Drake on land fitting out his ships, he is frighteningly vulnerable. If he dies, England will be open to invasion. In a London rife with rumour, Shakespeare must decide which leads to follow, which to ignore. When a high-born young woman is found mutilated and murdered at an illicit printing house, it is political gunpowder - and he has no option but to investigate.

In the dilapidated surroundings of the Savoy, a delegation from the Netherlands is gathered in a last ditch attempt to secure peace. Thomas Chaloner is horrified at the violent aggression shown to the Dutch by ordinary Londoners, but he is more worried by the dismissive attitude with which they are greeted by the King's officials. Then the body of his former brother-in-law is found in the Thames, and Chaloner discovers enigmatic clues pointing to a motivation for his murder.

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.

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.