But her latest pick, a poorly written and gruesome horror novel, is disappointing and Emma leaves a one-star review. A message dings back - the author, H.G. Kane, has replied and he's furious.

Emma brushes it off, until disturbing incidents start to occur. Scratches in the night. A figure crawling around in the shadows. Kane has written sixteen other novels, all similarly sadistic tales of stalking and murder. He knows he's a brilliant writer - he just needs to make Emma understand.