The fourth installment in an internationally bestselling mystery series that takes readers into the dark side of Scotland—where crime and the supernatural collide

The investigation of an on-camera murder places Inspector McLean in the path of an ancient evil, threatening everyone in his Edinburgh police squad . . .
The murder/suicide of a prominent Scottish politician and his family brings Edinburgh-based Detective Inspector Tony McLean out to the countryside to investigate. The powers that be want a quick report and then to have the whole thing buried, but McLean believes there's more to the case than meets the eye.
The more lies he uncovers, the more McLean comes to realize there is a connection between the influential politician and another case he’s working—the body of a man, stark naked and covered from head to toe in fresh tattoos, found in a river to the south of Edinburgh. But investigating the link between the two could have detrimental implications for his career, not to mention his life.