It's a Living S02E11 - Falling in Love Again

Unable to make friends at her jogging club which causes her to have a sore foot, Maggie accepts Dot's invitation to join her theater group, where she quickly becomes the new assistant to the theater director, but the director falls in love with Maggie, which creates a lot of mixed emotions for her as she still has feelings for her late husband Joseph.  Meanwhile, an undercover detective from the LAPD(Los Angeles Police Department) acts as a busboy at Above The Top in order to capture a male & female criminal duo, who pose as restaurant customers and rob the eating establishments in question of their money.