In 1665 England is facing war with the Dutch and the capital is awash with rumours of conspiracy and sedition. As an experienced investigator, Thomas Chaloner knows that there are very few grains of truth in the shifting sands of the rumour-mill, but the murder of Paul Ferine, a Groom of the Robes, in a brothel favoured by the elite of the Palace of White Hall makes him scent a whiff of genuine treason.

As well as investigating the murder, Chaloner is charged with tracking down the leaders of a fanatical sect known as the Fifth Monarchists. As he comes to know more about the group and...

London in the spring of 1665 is a city full of fear. There is plague in the stews of St Giles, the Dutch fleet is preparing to invade, and a banking crisis threatens to leave Charles II's government with no means of paying for the nation's defence.

Amid the tension, Thomas Chaloner is ordered to investigate the murder of Dick Wheler, one of the few goldsmith-bankers to have survived the losses that have driven others to bankruptcy - or worse. At the same time, a French spy staggers across the city, carrying the plague from one parish to another.

Chaloner's foray into the world of the...