Ramona Chang has a target on her back.
Her last scoop as an investigative journalist saw a local gang leader brought to trial, and he wants revenge.
From her run-down flat in east London Ramona is trying to start afresh as a private detective, but her latest case - that of a young woman assaulted by a man running an upmarket escort agency - has hit a dead end.
Until, that is, she crosses paths with Madeleine Farrow. Detective Sergeant Madeleine Farrow is a high-flying operative at the government's Serious Crimes Investigations Department.
Recently returned from a major trafficking case overseas, her first day back at the office sees her celebrate her fiftieth birthday, as well as kick-starting another big investigation. As the two unlikely allies realise that they can help with each other's cases, Madeleine operating within the bounds of the law, with government resources at her disposal, and Ramona working undercover on the fringes, they join forces to seek justice for those who have been betrayed by the system.
