#7: Ginny Wrobliki Disappeared Without Explanation
Mary Louise Wilson joined One Day at a Time in season two as Ginny Wrobliki, Ann Romano’s friend and neighbor. Then, just as quickly as she arrived, Ginny vanished. The character was written out without an on-screen explanation, leaving viewers to simply move on.

Behind the scenes, reports later suggested tension between Wilson and series star Bonnie Franklin. According to cast accounts over the years, Franklin reportedly felt upstaged, and the dynamic created rivalry. Whatever the exact cause, Ginny’s exit remains one of the show’s more abrupt departures.
