BEGIN SLIDESHOW Full Better Call Saul Season 4 Trailer Released AMC has released the full trailer for the fourth season of Better Call Saul, featuring some familiar faces from Breaking Bad. Jimmy McGill takes one more step into becoming Saul Goodman and business for Gus is booming. Check out the trailer in the player below! In Better Call Saul’s fourth season, Chuck’s death catalyzes Jimmy McGill’s (Bob Odenkirk) transformation into Saul Goodman.