Plot summary
Maxwell's father unexpectedly dies, and in his will he leaves everything to Concepción, a secret daughter he had with a flamenco dancer named Consuela ( Liz Torres ). C.C. is back from the sanatorium and doesn't miss the opportunity of terrifying Fran and trying to derail her wedding to Maxwell. Afraid that the Sheffields will go bankrupt, Fran visits Concepcion trying to persuade her to share the money with her siblings, but can't. Knowing what it feels like being poor, Fran tells Maxwell that she will understand if he decides to marry a rich woman in order to keep his lifestyle.
C.C. offers herself to marry Maxwell, but his love for Fran is beyond money. Maxwell's later lawyer arrives with the news that Concepción decided to share her money because Fran made her feel like family. Niles plays tricks on C. C., making her doubt her own sanity.
Credits
Adapted from Wikipedia contributors, The Nanny season 5. HTML formatting and reference markers removed.