Yorkshire Dales, Summer 1997. Vicky Mott slips out the door of her remote cottage, and into the pale dawn light. She scrawls a note for her friends.

Gone to see the sunrise. V xxx

That's the last anyone ever hears from twenty-year-old music lover Vicky.

Another victim of the Fellside Strangler?

That would make Vicky the fourth young woman to lose her life this summer. Snatched by a mysterious killer who stalks the fells . . .

But Vicky's body is never found.

2019. A skeleton is discovered in a twisty network of caves beneath the fells. Detectives Leo Donovan and Shan Young think they can finally give Vicky's mother the closure she so desperately wants. After twenty long years of questions and anguish.

But the deeper they dig into the past, the less certain they become.

And nothing can prepare them for the shocking truth . . .