Along came a spider by James Patterson

In his first and most chilling case, Detective Alex Cross is drawn into the twisted mind of a psychopathic kidnapper who calls himself Gary Soneji. When two children of high-profile figures vanish, Cross races against time to uncover the truth behind a series of brutal murders and psychological games. As the case unfolds, nothing is what it seems, and the line between hunter and hunted begins to blur. Along Came a Spider launched James Patterson’s bestselling Alex Cross series — a gripping, intelligent, and pulse-pounding thriller that redefined modern crime fiction.