Deadly truths lie buried beneath the snow.

Three people are stranded at a pub on a winter's night – a couple, the Fairweathers, and a woman, Alison Evans. Hours later, in the middle of the night, the pub alarm begins to sound and Alison Evans is missing. Within moments, her body is discovered outside.

The following day a young boy disappears while sledding with his grandfather.

The two cases couldn't be more different, but as the two investigations unfold and the window for finding Lucas Pritchard narrows, the job becomes personal for one of DI Annie Delamere's team. With links between the cases that seem to make no sense, can they find their answers before time runs out?