This is Chicago! It’s last call and the Gallaghers are going out with the biggest bang ever. Changes are coming that will force each of them to either step up or hit the road, but they know one thing for certain – Gallaghers may grow up, but they’ll never grow apart. Season Premiere. Order SHOWTIME to watch more. TVMA. Starring William H. Macy. Watch new episodes on Sundays at 9/8c on SHOWTIME.