The Nanny (1993) : 5x15

Fran is thrilled to tell the family that Maxwell has told her he loved her, and this time he didn't take it back! Everybody is happy for her (except for C.C.) and congratulate Fran. Maxwell reveals to Niles that he bought an engagement ring and is going to propose to Fran tonight. He, of course, can't keep a secret and tells Fran, who tells Sylvia, in a chain reaction that results in virtually everybody knowing about it. Maxwell asks Fran to invite her family over because they're having a very important dinner at the Rainbow Room and they should all be there. All the Sheffield and Fine families gather and wait for Maxwell, who never shows up. Afraid something happened to him (because she was sure he wouldn't just leave her waiting), Fran goes after him, and finds a passed out Mr. Sheffield behind the theater. He was knocked out by burglars who stole his watch and Fran's ring. Nevertheless, he proposes to Fran.