A father is murdered in the dead of night in his London home, his head wrapped tightly in tape, a crude sad face penned over his facial features. But the victim's only child is left alive and unharmed at the scene.

Met Police detectives Grace Archer and Harry Quinn have more immediate concerns. Notorious gangster Frankie White has placed a target on Archer's back, and there's no one he won't harm to get to her.

Then a second family is murdered, leaving young Uma Whitmore as the only survivor. With a serial killer at large, DI Archer and DS Quinn must stay alive long enough to find the connection between these seemingly random victims. Can they do it before another child is orphaned?