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. SIO Carter and DI 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. More than ten years earlier, he was part of an operation that tried to trap Terry as he made his first big drugs deal. Carter was an undercover agent then, along with a female operative, Della. She and Carter were an item until she fell for Eddie Butcher and the case collapsed. She became Della Butcher - and now, a widow at the mercy of the remaining Butcher brothers, her life is in danger.
When Della offers Carter a chance to finally catch Terry, he knows he cannot refuse. But his reunion with Della comes at a heavy personal, and professional, cost - and Willis must protect them all as the Butcher family’s enemies close in, wanting money and revenge.