DI Joe Plantagenet investigates a house with a disturbing past in the fourth of this popular police procedural series.  - Boothgate House has a sinister past. Once an asylum for the insane, serial killer Peter Brockmeister was sent there on his release from prison in 1978. Three years later, it closed, and Brockmeister died in mysterious circumstances. Solicitor Melanie Hawkes is investigating the suspicious events when her young daughter is kidnapped. Meanwhile, Boothgate House resident Lydia Brookes is burgled. And why is a paranormal researcher fascinated by the building’s basement? As Joe uncovers the appalling truth, he faces an evil that threatens those closest to him – and puts his own life in jeopardy.