From the number-one best-selling author of The Ashes of London and The Fire Court this is the first instalment in the acclaimed Lydmouth series. Workmen in the small market town of Lydmouth are demolishing an old cottage. A sledgehammer smashes into what looks like a solid wall. Instead, layers of wallpaper conceal the door of a locked cupboard which holds a box - and in the box is the skeleton of a young baby.

London, September 1666. The Great Fire rages through the city, consuming everything in its path. Even the impregnable cathedral of St. Paul's is engulfed in flames and reduced to ruins. Among the crowds watching its destruction is James Marwood, son of a disgraced printer and reluctant government informer. In the aftermath of the fire, a semi-mummified body is discovered in the ashes of St. Paul's, in a tomb that should have been empty. The man's body has been mutilated, and his thumbs have been tied behind his back.

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.

Nineteen thirty-four, London. Into the decaying cul-de-sac of Bleeding Heart Square steps aristocratic Lydia Langstone fleeing an abusive marriage. However, unknown to Lydia, a dark mystery haunts Bleeding Heart Square. What happened to Miss Penhow, the middle-aged spinster who owns the house and who vanished four years earlier? Why is a seedy plain-clothes policeman obsessively watching the square? What is making struggling journalist Rory Wentwood so desperate to contact Miss Penhow?

Little Lucy Appleyard is snatched from her child minder's on a cold winter afternoon, and the nightmare begins. It is as if the child had disappeared into a black hole with no clues to her whereabouts...until the first grisly discovery in a London graveyard. More such finds are to follow, all at religious sites. In a city haunted by religion, what do these offerings signify?