Kara Wright and Tien Tran, combat veterans of an elite intelligence unit, now make their living as Private Investigators. Often working the mundane, just occasionally they get to use all their former training. When siblings Zoe and Michael Sterling insist that their middle-aged parents have gone missing, Kara and Tien are at first sceptical and then quickly intrigued; the father, ex-intelligence analyst Chris Sterling, appears to be involved with an elusive Russian thug. Using less than orthodox methods and the services of ex-colleagues with highly specialised talents, Wright & Tran take on the case. But the truth they uncover is far from simple and will shake Zoe and Michael as much as it will challenge Tien and anger Kara. An anger she can ill afford for she is being hunted by others for the killing of a street predator who chose the wrong prey. The only constant in this darkening world is that nothing and no one can be taken at face value.