The girl lies on the dark ground, one arm flung out as if she is still looking for someone to help her. But her wide eyes are staring upwards, and Lexi knows that it is too late...Detective Lexi Bennett is walking through the quiet Canterbury streets when she hears screaming. Rushing towards the sound, she finds the body of a teenage girl lying beneath one of the city's ancient towers. Lexi looks up at the cold grey stone, and vows that she will find answers. Did the girl jump or fall... or was she pushed?Olivia 's distraught parents say their daughter was a talented musician with everything to live for. Lexi's nephew, Sam , who knew Olivia, tearfully insists that she would never have taken her own life. But when a note is found, Lexi reluctantly wraps up the case.Then another teenager is found dead on a deserted path beneath a cliff. Lexi is certain there's a link, especially when she learns that the boy was a musician too. His note uses the same phrases as Olivia's, and when a second person's footprints are found at the scene, Lexi realises she is on the track of a master manipulator... and ruthless killer.With her boss still unconvinced that the deaths are murders, Lexi races to find proof to back up her hunch, and to understand what lies behind these evil attacks on vulnerable children.And then she gets a call that fills her with dread. Her nephew Sam is missing.Can Lexi outsmart a truly brutal monster, or will her own family pay the price?