Not long after receiving a devastating medical diagnosis, Amy Cooper is at the police station--reporting the disappearance of her husband, Callum. A few miles away, a mother and her children are outdoors enjoying a day in the snow when they discover a dead man in a ditch nearby. The mother calls the police, whose initial investigation indicates the body belongs to the missing husband, killed in a hit-and-run. But the autopsy results reveal to DI Samantha Freeman and DS Jenny Newcombe that the man didn't die in a car accident. And a murder investigation is initiated. Now they must work their way through a web of secrets and lies to learn what really happened--and to whom...