This is a head-scratcher of an episode since it discombobulates a big chunk of the MTS universe. One episode after a hasty trip to Hawaii, the Douglas family flies back to Michigan so Papa can make another hasty decision to relocate to southern California. College student Robbie (Don Grady) is demoted back to high school so he can meet his future wife Katie (Tina Cole), who has a locker next to his, as well as her house. Or are we meant to believe college students have hall lockers? Papa Steve Douglas flashbacks to black-and-white clips to remind his tearful progeny how important family is, except for oldest son Mike (Tim Considine) who doesn't exist anymore (perhaps he slipped into the Upside Down with Bub?). Everything about this episode seems hastily cobbled together. I realize the purpose of My Three Sons was to counter-program Fred MacMurray's brilliant film career in the '40s, where he specialized in playing heavies and adulterers. It's disappointing that he devoted the end of his cinematic career in the '60s by making those awful "family friendly" Walt Disney movies about talking dogs and flying cars, only to be replaced by the now-forgotten Dean Jones. The moral is when story continuity is sacrificed for convenience, everyone suffers.