Everything Old is New Again - S1.E5

When Richard brings a client home for dinner, Ethel realizes that she was the man's housekeeper when he was a little boy in the 1920's. To complicate matters, Lissy needs a chaperone for her school's 1920's-theme dance, and Alistair agrees to chaperone... with Ethel as his date. Ethel starts having genuine feelings for Alistair, so Mr. Divine intervenes and tells her that she must break it off.