Guilt, sacrifice and redemption in a freezing Peak District winter in this tense psychological thriller from the acclaimed author of Black Dog: 'A dark star may be born!' Reginald Hill

It wasn't the easiest way to commit suicide. But Marie Tennent seemed to have just curled up in the freezing snow on Irontongue Hill and stayed there until her body was frosted over like a supermarket chicken. And hers isn't the only death the police have to contend with either - not after the discovery of a baby in the wreckage of an old Airforce bomber, and the body of a man dumped by a roadside.

As if three bodies on her hands isn't enough, snow and ice have left half of 'E' Division out of action and Diane Fry is forced to partner DC Gavin Murfin. She and Ben Cooper were never a match made in heaven, but next to Murfin, working with Ben starts to look like a dream.

He's on a trail of his own, though - and one as cold as the Peak District January. In an equally bitter winter in 1945 an RAF bomber crashed on Irontongue Hill killing everyone except the pilot, who walked away and disappeared. Now his grand-daughter, Alison Morrissey, is in Derbyshire desperate to clear his name, and Ben can't help taking an interest.

But is a fifty-year-old mystery really the best use of police time? Or does a vicious attack in the dark Edendale backstreets prove that the trail's not quite as cold as he'd thought? Could the past be the only clue to present violence as an icy winter looks set to get even chillier?