Love story, with murders

A freezing cold winter. A dead body from the past. A tale of love - and murder.

A human leg is discovered in a suburban freezer. The victim is a teenage girl killed some ten years earlier. But then other body parts start appearing. And these ones are male, dark-skinned, and very fresh...

Is this a tangled tale of love gone wrong? Or are there more sinister lines connecting the dead bodies to a recent tragedy in a Cardiff prison, and an engineering company that's up to a whole lot more than is first apparent?

Fiona Griffiths starts to investigate, in the midst of the coldest winter on record. Up in a remote cottage in the Welsh Black Mountains, she finds the data that contains the clue to the entire mystery. But, as the first snow starts to fall, she discovers that she's not alone...