Hold Tight by Harlan Coben

In this gripping thriller, a suburban family is thrown into turmoil when Mike and Tia Baye decide to secretly install spyware on their teenage son Adam's computer after noticing changes in his behavior. As they delve deeper into his online activities, they uncover a series of dark secrets that intertwine with a broader web of danger involving a missing girl, a brutal murder, and a community on edge. The story explores themes of privacy, trust, and the lengths parents will go to protect their children, all while unraveling a suspenseful mystery that keeps readers on the edge of their seats.