Nominated for the CWA New Blood Dagger in the UK and Macavity First Book award in the USA, and won the Prix Cezam Littraire. As dawn breaks over London, the body of a young man is discovered in a Notting Hill churchyard. The killer has left DCI Grant Foster and his team a grisly, cryptic clue. It's not until the clue is handed to Nigel Barnes, a specialist in compiling family trees, that the full message becomes spine-chillingly clear. It leads Barnes back more than one hundred years - to the victim of a demented Victorian serial killer. When a second body is discovered Foster needs Barnes's skills more than ever. The murderer's clues appear to run along the tangled bloodlines that lie between 1879 and now. And if Barnes is right, the killing spree has only just begun .

From the author of the bestselling Who Do You Think You Are? comes a haunting crime novel of blood-stained family histories and gruesome secrets.