Fear will let you in. Terror will keep you there. They were miscreants with black souls, roaming the corridors and passageways. Infamous people thought long-deceased. Hiding and nurturing their evil in a basement full of secrets so shocking they would shake the world if they were ever revealed. David Ash, ghost hunter and parapsychologist, arrives at Comraich Castle - a desolate, ancient place with a dark heart - to investigate a series of disturbing events. An incorporeal power has been ignited by a long-ago curse, fed and now unleashed by the evil of those who once inhabited this supposed sanctuary - and by some who still do. Yet their hour of retribution is at hand . . . Ash is James Herbert's most controversial novel, and will make you wonder what is fact and what is fiction.