The third installment follows Detective Harry Ambrose as he begins a routine investigation of a tragic car accident on the outskirts of Dorchester, in upstate New York. Ambrose uncovers a hidden crime that pulls him into the most dangerous and disturbing case of his career.

On a summer evening, in the seemingly idyllic suburb of Hollington Drive, 10-year-old Alex Boyd is declared missing. As grief tears through the community, sisters Theresa and Helen fight to hold their lives and their families together. Secrets and lies begin to surface as long-held faȧdes falter.

Jack is promoted to the new CIA Acting Deputy Director and is given the daunting task of unearthing internal corruption. As he investigates, he discovers the convergence of a drug cartel with a terrorist organization, ultimately revealing a conspiracy much closer to home and testing his belief in the system he has always fought to protect.