When wealthy housewife Ella Watson is brutally stabbed to death in broad daylight it sends shockwaves through the Lake District community. Later that day, Keira Bradley meets the same fate but on the notoriously rough Beacon Estate. DI Kelly Porter must run two simultaneous investigations, hampered by a boss always protecting his reputation and a housing estate where fear rules and no one speaks out.

Kelly won't rest until she has justice for both victims. But there's a traitor in the ranks. When the evidence points to someone inside her team, Kelly has to put feelings aside and work the case no matter where it leads.