For those unaware, James Herbert is pretty much the UK's most popular "chiller" writer; think the British version of Stephen King, in terms of depth of work and the fact that a few of his books have been made into major motion pictures or made for TV programs (Haunted, Fluke, The Secret of Crickley Hall). Yes, I know some may want to chime in and mention Ramsey Campbell, who's arguably deserving of that, but for me, Herbert is the man. I've long enjoyed his work.
The second installment involving paranormal investigator, David Ash, the Ghosts of Sleath takes our skeptical enquirer to the quaint sleepy English countryside village of Sleath, which has suddenly fallen prey to sudden numerous hauntings. Once there, Ash begins to have his own ghostly experiences, and aided by the daughter of the town vicar, they begin to unearth something far more terrible and horrifying than mere ghosts.
Herbert is a master of his craft, layering in the frights and chills, while spinning a tale about a town with a dread, dark secret that spans hundreds of years. If you haven't checked out any of Herbert's novels, I'd recommend this book, certainly, or my personal favorite, The Dark. Even though this is the second novel featuring Ash, you don't have to start with Haunted, the first book that introduces us to that character. Recently, Herbert published Ash, the third David Ash novel.