 At Fred MacMurray (qv)s insistence, all episodes were filmed out  of sequence during the shows entire run using a technique now known  as the MacMurray method. MacMurray would do all of his scenes in 65  nonconsecutive days. The cast regulars got haircuts once a week in  order to maintain continuity. Guest stars would have to return  months later to complete an episode. All kitchen scenes would be  done together, then all scenes in the upstairs hallway would be  filmed together, etc. This fact was well concealed until  Dawn Lyn (qv) joined the cast as Dodie. Her upper front teeth grew  in irregularly during the entire 1969