Cold Killers: 5 (DC Ebony Willis) by Weeks, Lee | Hardcover | Crime & Mystery

Eddie Butcher, one of four brothers from a notorious East End family, is tortured and brutally murdered while visiting London from his home in Marbella. DI Carter and DS Willis monitor his extravagant funeral in case Eddie's violent brother Terry, under house arrest in Spain, tries to make an appearance. Terry is wanted for robbery, drug trafficking and murder - and the police strongly suspect he is even prepared to kill his own family to maintain his power.
What Carter hasn't told all of his colleagues is that this family's history is personal to him. When Carter is offered the chance to finally catch Terry, he knows he cannot refuse. But it comes at a heavy personal, and professional, cost - and Willis must protect them all as the Butcher family's enemies close in, wanting revenge.