They’ll follow you home . breathe down your phone at night . a prime target for every psychotic grinder of their dark satanic mills that ever sacrificed a chicken .

Diocesan Exorcist: a job viewed by the Church of England with such extreme suspicion that they changed the name. It’s Deliverance Consultant now. Still, it seems, no job for a woman. But when the Bishop offers it to Merrily Watkins, Parish Priest and a single mum - she’s in position to refuse.

It starts badly for Merrily and gets no easier. As an early winter slices through the old city of Hereford, a body is found in the River Wye, an acient church is descerated and signs of evil appear in the cathedral itself, where the tomb of a medieval saint lies in pieces.