Nick Ballard is being haunted by the ghost of his dead friend and it’s literally killing him. In London, a vicious new murderer is stalking the dark underbelly of the City, preying on lost souls. When the bodies of multiple victims are discovered, DCI Kate Garvey reaches out to Nick in the hope that he can use his special gifts to help, not knowing that the killer is about to strike at the heart of her family. Nick has to face his worst fear if he is to have any chance of tracking down a merciless, relentless psychopath who threatens to destroy everything he loves.