The Professor is dating a somewhat kooky colleague at the same time as Nanny has Hal install his 35-year-old radio into her car, Arabella. The Professor's date has him doing things very unusual for him - like attending revivals, dancing in the street, wading in fountains and coming home from late dates in his bare feet - while at the same time, the radio is picking up only broadcasts from 1936. He's mystified by the radio as well as his new-found silliness with his date, and when he tracks down the reason the radio is playing only old programs, he's equally mystified when his kids are disappointed that he did. Or did he?
Bridget Hanley is the Professor's free-spirited new date, and it's worth the episode to watch her get Richard Long to dance (badly) in the street and to run away from a curious police officer (aside - Long was good at playing a bad dancer when in fact he was a good dancer - witness him and Barbara Stanwyck doing some wild and great dancing in "All I Desire" in 1953). The strictly by the book, logical and totally scientific Professor loosens up.