An F for Mrs. Livingston

S1 E11: Mrs. Livingston (Miyoshi Umeki) suffers a loss of face when she flunks a test at her evening English class. A playmate's story about the Japanese custom of hari-kari frightens Eddie (Brandon Cruz) into thinking that the housekeeper is about to follow the old custom. He trails her around the apartment all day long, until Tom (Bill Bixby) comes home, and the situation is resolved.