Best friends Tommy Boyle and Scratch always had each other's backs. Dragged up in care, and cruelly betrayed by everyone they trusted, they made a pact to fight their way out of the gutter - together. Old loyalties die hard on the streets of London. Tommy throws his lot in with the notorious Darling family - even if it means leaving Scratch to the wolves. She's destined for a different path, reinventing herself as copper Kim Regan. Now they're on opposite sides of the law. Running Operation Sting, Kim will rip the heart out of the Darling's empire - and only her old pal Tommy stands in her way.