MOTHER’S DAY IN RIVERDALE Refusing to accept what’s going on around her, Alice (Mädchen Amick) creates an imaginary musical fantasy world in which the Coopers are one big happy family again.  But as her mother continues to spiral, Betty (Lili Reinhart) does her best to pull her back to reality.  Meanwhile, Tabitha (Erinn Westbrook) ropes Jughead (Cole Sprouse) into a family dinner with her parents, and Veronica (Camila Mendes) and Archie (KJ Apa) make a big decision about their future.  Madelaine Petsch, Casey Cott, Vanessa Morgan, Charles Melton and Drew Ray Tanner also star.  Ronald Paul Richard directed the episode written by Tessa Leigh Williams (#518). Original airdate 9/29/2021.