Stalking. Arson. Murder.Butler and West are back together and the stakes have never been higher. When an old friend tells DS Freya West that she's being stalked by someone she met online, Freya promises to help. But there are no leads, and the dating site refuses to give up their data. To make matters more complicated, DI Robin Butler is back in town. He's investigating a string of arson attacks that have escalated to murder, and the cases seem to be connected somehow. They're going to need their wits about them Because this is a killer more devious than any they've hunted before, and he wants to obliterate everything they hold dear.