Amazon Prime Video’s longest-running series, Bosch, based on the novels by Michael Connelly, 64, begins its seventh and final season June 25 with a story adapted from the novel The Burning Room. It showcases Bosch’s motto, “Everyone counts, or nobody counts,” when a child dies in an arson fire and Bosch risks everything to bring her killer to justice. “It’s bittersweet ending an ensemble after seven years,” says Titus Welliver, 59, who stars as the fictional LAPD detective named after the Dutch artist Hieronymus Bosch. “We are all very proud of what we have accomplished.”