When a body is found after a flood, the secrets of a tempestuous life surface with it. Deputy Chief Constable Bob Skinner has kept the existence of his hated brother Michael hidden for years. As he relives their past conflict, other demons threaten his future. For not only are his professional enemies circling, but Sarah, his wife, seems set on a course for calamity. Meanwhile, in an Edinburgh art gallery, his team confront a shocking and very public case of arson. Was it a political protest, or something much deeper?