The series is based on Michael Connelly's bestseller. Harry Bosch works at one of the police stations in Los Angeles. The main character conducts investigations related to murders. Every day, complex cases end up on his desk. The culprit could be anyone, and the tension that constantly builds up does not allow for mistakes. Every new investigation is a challenge that Bosch confidently takes on. Criminals are becoming smarter and their methods harsher. The story of Bosch began with a case involving the murder of a thirteen-year-old boy. The detective had to conduct the investigation despite being accused of the murder himself.