A fire in the home of a respected GP and his primary school teacher wife devastates a close-knit Scottish community, as lives are lost in the blaze. However, further investigation reveals something more sinister than first apparent and the villagers must pick through the ashes to find answers. Was it a tragic accident or something more troubling? The first of a four-part crime drama, starring David Tennant, Cush Jumbo, Matthew McNulty and Anna Madeley.