Warning: spoilers ahead for the Better Call Saul Season 3 finale, "Lantern."
The third season of AMC's Better Call Saul has come to an end, and the finale featured some pretty great twists. Despite the scary car crash from last week's episode, Kim actually was one of the characters who emerged from "Lantern" mostly intact. Hector collapsed, forcing Gus to save him, while Jimmy gave up his hopes for his elder law business. The biggest twist, however, had everything to do with Chuck.
After Patrick Fabian's Howard ousted him from his work, Chuck relapsed in his mental illness and began ripping his house apart, looking for what may or may not have been a phantom source of electricity. At the very end of the episode, Chuck was sitting in his destroyed house, with only an electric lamp as a light source. Looking totally done with the world, Chuck kicked the lamp down onto a stack of papers, which caught fire and (probably) burned the man to a crisp. While we didn't actually see Chuck's death, actor Michael McKean is positive that Chuck is gone for good. In fact, the way he sees it, Chuck's tragic death had to happen for the sake of his brother's journey. McKean had this to say:
Given the way things ended between the brothers McGill, I have no trouble believing that Jimmy will feel the burden of Chuck's death for the rest of Better Call Saul, into Breaking Bad, and as he kicked off his illustrious Cinnabon career. Jimmy and Chuck met one last time when Jimmy visited Chuck at his home, which he had not yet destroyed.
Jimmy, shaken by Kim's close call, tried to make peace with his brother, to which Chuck simply said "You never mattered all that much to me," which... ouch! Their conversation was clearly painful to Jimmy at the time; we can bet that it will haunt him for years to come, assuming Better Call Saul doesn't pull a fast one in the Season 4 premiere and try to claim that Chuck survived somehow.
Michael McKean went on in his chat with The New York Times to expand on Jimmy and Chuck's final interaction:
Jimmy may not have been Chuck's favorite person in Albuquerque, but the first three seasons of Better Call Saul prove that he did matter very much to Chuck. We can only guess at this point if Jimmy will be able to see the lie in his brother's words and maybe make some degree of peace with his passing, but given where we know he ends up, my money is on him never entirely recovering from Chuck's death.
Kim was a solid stabilizing force on Jimmy in "Lantern" (despite the fact that she spent the first three quarters of the hour injured, drugged, and/or enthralled by Blockbuster videos) and she may continue to be a good influence on him. Still, there was no Kim in Breaking Bad. Just because she survived the car crash doesn't mean there's not a lot more pain for her in future seasons. We'll have to wait and see.