On the night of a massive storm, trying to get home, DCI Vera Stanhope (Brenda Blethyn) comes across an abandoned car with a baby inside. With no mobile signal and blocked roads at every turn, Vera is forced to seek refuge somewhere sheโd rather not be, Brockburn House, the Stanhopeโs ancestral pile. Vera doesnโt exactly receive a warm welcome from her estranged family as thereโs a function in full swing and her turning up with a baby isnโt a great look. Things start to look even worse and take a far sinister turn when a body is found on the track leading to Brockburn House.