This is the last episode featuring Vivian Vance as a regular. She had settled into a happily married life in New England and had grown weary of the constant cross-country commute. Lucille Ball is said to have regretted her departure for the rest of her life. (They obviously had no long-term hard feelings at Viv makes occasional visits in the future.) Beginning next season, Lucy and Mr. Mooney are relocated to California.