Robert Bloch 
Psycho 

Marion is lost on a dark and lonely road; she’s tired and hungry and afraid. She thinks she’s dreaming when she sees a motel sign shining in the darkness: Bates Motel. But for Marion the nightmare is just beginning …To most people Psycho needs no introduction, but although Alfred Hitchcock’s film was largely faithful to the book, in the novel itself you will find a story more nuanced and — if possible — even darker.