On the day after Christmas, Detective Carl Mørck, head of Department Q, finds himself handcuffed in a police car headed for Copenhagen's Vestre prison. After 15 years, a violent case from his past has caught up with him. Charges of drug trafficking and murder threaten to destroy his life and career. But he is being framed. Someone has a million-dollar bounty on his head to make sure he doesn't talk, putting him in grave danger among the prison's incarcerated criminals and corrupt officers. Carl's colleagues at the Copenhagen Police Department instantly turn their backs on him, leaving the ever-loyal Department Q team as his only hope. In search of answers, Rose, Assad and Gordon must disobey direct orders from way up the chain to try to unravel the case. LOCKED IN is the 10th and final installment in Jussi Adler-Olsen’s Department Q series.