17-year-old Lena Moreau lost her mom in a tragic accident no one can explain - not even the police. But before she can begin grieving, her best friend Avery Callahan's mom also goes missing, vanishing without a trace. While everyone believes Avery's mom ran away or died, Lena feels a disturbing connection between the 2 cases. She dives headfirst into the mystery, desperate for answers - and justice, unaware of the future. But the deeper she digs, the more things stop making sense. She starts finding evidence that someone is lying. Someone close.