By horror master Robert Block, the creator of 'Psycho.' From the cover: ...(Block) takes you into the inner recesses of the mind of a madman. A man bent on revenge that comes out of the night, grabbing its victims by the throat and giving no quarter. From the moment Karen Raymond entered the sanitarium, she knew something was terribly wrong. The doctors had been brutally murdered, the patients had escaped. Was she to be the killer's next victim?