Bosch: Legacy concluded with its third and final season in 2025, and here's all the details about Harry's last hurrah. Based on the character created by author Michael Connelly, Harry Bosch is a hardened LAPD detective who debuted in 2014's Bosch as played by Titus Welliver. After seven seasons of the original series, Bosch: Legacy picks up where Bosch left off when it concluded in 2021, and the fact that it was renewed for season 3 before season 2 began speaks volumes about how well it's carried the legacy of the original show.