Mr. Tudball (Tim) gets into trouble with a newly-installed door buzzer system, and Mrs. Wiggins (Carol) is no help; a filmmaker (guest Roddy McDowall) wreaks havoc while attempting to film a documentary about a live operation in a hospital; Vicki sings "Hollywood Seven"; two Brits (Carol, Roddy) have an encounter in a London elevator where they speak in one-word sentences; and Carol, Harvey and Roddy perform a musical salute to silent movie comedians. (thetvdb.com)