The Unfinished Dance is a 1947 American musical drama film directed by Henry Koster and starring Margaret O'Brien, Cyd Charisse and Karin Booth.

She and her best friend Josie plan to sabotage Anna's stay, beginning with mischief, like turning off the lights in the middle of a performance.

Meg is so obsessed in her infatuation with Bouchet, that she even has a pummelling and hair pulling tussle in the locker room with fellow dance student Phyllis, who dares to express her preference for Anna's talent and prestige over Ariane's.

Later on during a prestigious performance of "Swan Lake", while intending only to switch off the house lights, Meg, in the semi darkness, accidentally instead pulls the lever operating a trap door.

The movie ends with a spirited performance of 'Holiday for Strings' where Ariane Bouchet takes the leading role, supported by the entire ballet company and the youngsters including Meg, Josie and Phyllis, who appear to have been completely reconciled.

Madame Darina meanwhile, watches benignly and encouragingly from the wings and appears to have fully accepted her new position as teacher and mentor.