Shelter

Mickey Bolitar's year has already taken more than its share of damage: his father dead, his mother in rehab, a new school and an uncle he barely knows. When a girl he has just met disappears, he follows her trail into territory that raises questions about her identity and, more unsettlingly, about his father's. What begins as a missing person search opens into something darker and more deliberate, a conspiracy that reframes everything Mickey thought he understood about his own life. Coben transfers his gift for pace and misdirection into a younger register without losing any of the tension. 
The Mickey Bolitar series features Myron's teenage nephew as its protagonist and was written with a younger readership in mind, though the content is considerably darker than most YA fiction.