Two girls go missing. Only one will return. The couple that offers the highest amount will see their daughter again. The losing couple will not. Make no mistake. One child will die. When nine-year-old best friends Charlie and Amy disappear, two families are plunged into a living nightmare. A text message confirms the unthinkable; that the girls are the victims of a terrifying kidnapping. And when a second text message pits the two families against each other for the life of their children, the clock starts ticking for D.I. Kim Stone and the squad. Seemingly outwitted at every turn, as they uncover a trail of bodies, Stone realises that these ruthless killers might be the most deadly she has ever faced. And that their chances of bringing the girls home alive are getting smaller by the hour . . . Untangling a dark web of secrets from the families' past might hold the key to solving this case. But can Kim stay alive long enough to do so? Or will someone's child pay the ultimate price?
Five figures gather round a shallow grave. They had all taken turns to dig. An adult-sized hole would have taken longer. An innocent life had been taken but the pact had been made. Their secrets would be buried, bound in blood... Years later, a headmistress is found brutally strangled, the first in a spate of gruesome murders which shock the Black Country. But when human remains are discovered at a former children's home, disturbing secrets are also unearthed. D.I. Kim Stone fast realises she's on the hunt for a twisted individual whose killing spree spans decades. As the body count rises, Kim needs to stop the murderer before they strike again. But to catch the killer, can Kim confront the demons of her own past before it's too late?
The greater the Evil, the more deadly the game... When a rapist is found mutilated in a brutal attack, Detective Kim Stone and her team are called in to bring a swift resolution. But, as more vengeful killings come to light, it soon becomes clear that there is someone far more sinister at work. With the investigation quickly gathering momentum, Kim finds herself exposed to great danger and in the sights of a lethal individual undertaking their own twisted experiment. Up against a sociopath who seems to know her every weakness, for Detective Stone, each move she makes could be deadly. As the body count starts to mount, Kim will have to dig deeper than ever before to stop the killing. And this time - it's personal.