The horrifying novel that inspired the 1983 cult classic film OF UNKNOWN ORIGIN! The ultimate nightmare... For rising young executive Bart Hughes, his Manhattan brownstone was his castle - a haven of peace and security amid the urban rot of New York City. Now, with his wife and children away for the summer, it was more peaceful still. Until he discovered he was not alone, but had an uninvited guest in the house... Until his home became a hunting ground where he stalked his inhuman intruder... Until he realized he was the one being hunted, the one who was trapped by... The Visitor. Terror with teeth that won't let you go!