DCI Harker is enjoying a holiday in Whitby, and the last thing he wants is to be drawn into solving a murder. So when a famous novelist is killed right in front of him, he decides he's a suspect and relaxes on the dodgems. DS Critchley, however, needs his help, especially when another body washes in with the tide. Who is the murderer, what does it have to do with this spooky old coastal town, and how does it involve the huge dog seen on the Moors?