Ramona Chang - an investigative journalist turned private detective, Ramona's final scoop left her with a target on her back.

Now in hiding, she is living in a run-down flat in east London. But when her latest case looking into an upmarket escort agency takes a dark turn, she needs information only accessible to those in power...

Detective Sergeant Madeleine Farrow - A high-flying operative at a government agency, it's the day of her fiftieth birthday when Madeleine finds out that she has been given the lead on an investigation into corruption on a global scale. But when she finds her case mysteriously blocked from the inside, she needs someone on the outside, capable of moving undetected...

As Ramona's and Madeleine's cases collide, can the unlikely allies find justice for multiple victims within the capital's hotbed of lies and deception?