Garway church was built by medieval Knights Templar, whose stone coffin lids can be seen in its altar steps and window sills. After seven centuries, the Welsh Border village is still shadowed by their mysteries.

A few fields away, the Master House, abandoned and falling into ruin, has been sold to the Duchy of Cornwall, the private estate which provides an income for the Prince of Wales. But renovation plans stall when a specialist builder refuses to work there, insisting it's a place that doesn't want to be restored.

Directed by the Bishop of Hereford to investigate, deliverance consultant Merrily Watkins is unconvinced, wary of being used, suspicious of the people she's supposed to be helping.

But violent death changes everything, and Merrily uncovers hidden layers of sin and retribution in a secretive landscape where local inns have astrological names and a feud between two local families has its roots in medieval history. And what did happen in Garway to intimidate even the great Edwardian ghost-story writer M. R. James?

Warned off when her inquiries stumble into forbidden areas, uncovering modern-day Masonic links, Merrily has no option but to conceal a major crime as she goes back to Garway to find fibres of fear stitched into history and insidiously twisted in the corridors and the cloisters of power.