Moon - James Herbert

The nightmare begins before you sleepHe had fled from the terrors of his past, finding refuge in the quietness of the island. For a time he lived in peace—until the "sightings" began, visions of horror seeping into his mind like poisonous tendrils; violent acts that were hideously macabre and the thoughts becoming intense. He witnessed the grotesque acts of another thing, one that glorified murder and mutilation, a monster that soon became aware of the observer within its own mind—and relished contact. The creature would eventually come to the island to seek him out.