An Amazon Charts bestselling series。

A Wall Street Journal bestseller。

The moors are a perfect hiding place for a serial killer。 And a chilling return to the past for nascent private investigator Kate Marshall in a pulse-racing thriller by the author of Nine Elms。

Criminology academic Kate Marshall is on a scuba jaunt with her son when they dive toward a shocking discovery: the body of a teenage boy entangled below the surface of the Shadow Sands reservoir。 The detective chief inspector’s too-quick narrative of a tragic drowning doesn’t add up， and when Kate follows the evidence， it leads to a darker discovery。

The victim is only the latest in a series of mysterious deaths and disappearances linked to the moorlands—and a mythic phantom said to hide in the rolling fog。 When a researcher of urban legends vanishes without a trace， Kate and her associate Tristan Harper must act fast and look deep if they hope to find her alive。

But the elusive serial killer they’re hunting isn’t the only one a step ahead of Kate and Tristan。 Someone else is making dead certain that the secrets of Shadow Sands stay buried。