The body of a beautiful woman is found, posed in prayer, on the altar steps of Hereford Cathedral.

Police immediately assume it’s the work of the ‘Sacristan’ — a serial killer who deposits his victims’ bodies in quiet country churches. But this crime scene is different. Is the Sacristan sending a new message?

Detectives Lambert and Hook soon realise that nothing about this case is straightforward.

The victim led a complicated life and had a number of enemies, each with their own dark motive.

Lambert and Hook begin to suspect this is the work of a daring copycat killer.

Now there are two murderers to bring to justice. Can the detectives find the killers before the body count grows?