Amazon's longest-running TV show, Bosch, now has a premiere date for its fourth season: Friday, April 13th. The 10-episode season will address accusations of police brutality against the LAPD. When a civil rights attorney is murdered just before a case against the police department, Detective Harry Bosch is put in charge of a task force to find the truth, even if the responsibility lies with his fellow police officers. You can see a trailer for the fourth season below. The show has already been renewed for a fifth season.