Author James Herbert on his experiences with ghosts
3 September 2012 Last updated at 12:54 BST
James Herbert has been speaking about his new book, which sees the return of parapsychologist David Ash.
The bestselling author described Ash as a story about a "cynical ghost hunter" who investigates a murder in a Scottish castle.
Talking to BBC Breakfast, Herbert also spoke about his own experiences with the paranormal, claiming he had once seen a ghost himself while on holiday in Marbella.