David Ash detective of the paranormal is sent to the mysterious Comraich Castle, secluded deep in the Scottish countryside, to investigate a strange, high-profile case: a man has been found crucified in a room that was locked.

The reports suggest that the cliff-top castle is being haunted.

Who or what is the reclusive hooded figure that Ash has seen from the window walking across the courtyard in the dead of night? What are the strange, animal-like sounds that come from the surrounding woods? And why are the castle's inhabitants so reluctant to talk about what they have seen?

What Ash eventually discovers is truly shocking.

Featuring one of Herbert's best-loved characters, first encountered in The Ghosts of Sleath and Haunted, Ash is a ghost story like no other, that will chill you to the core.

Released August 30th by Pan Macmillan.