DS Gina Jenkins discovers a mutilated body on the beach, setting off a search for a serial killer. With Gina consumed by the investigation, her brother, Sam, returns home from prison and struggles to start a new life.
Loner Sam and his ambitious sister, Gina, live in a decaying steel town in South Wales. Since the death of their father twelve years earlier, the two have taken divergent paths. Gina has a promising career in the police force, but Sam's life is going nowhere, until one day he gets his hands on a gun. Emboldened by newfound confidence, he begins to commit increasingly daring crimes.
After his argument with Gina, Sam stays with his mother but still gets caught up in the feud between his caseworker, Caryn, and her husband, DI Morgan Riley-Gina's boss. The police track down another member of the rugby club who has changed his name and gone off the grid.
As Sam stashes the gun away, Gina checks into neighbors' complaints about hearing gunshots at night. The police question suspects for the murder of local car salesman Stevie Rose, but his widow, Patricia, makes a surprising announcement.
Having escaped to hide in Elizabethan London, Matthew and Diana must find a powerful witch teacher to help Diana control her magic and search for the elusive Book of Life. Enemies are everywhere, the threat to witches is growing, and Diana and Matthew's romance faces a barrage of new threats, from within as much as without.