My Babysitter's a Vampire - Season 2 Episode 5 Mirror/rorriM

When Whitechapel High first put on a production of The Rainbow Factory, the star was tragically crushed on stage in a prank gone wrong. Twenty-five years later, the play is back, and Ethan and the gang have to handle a ghost with a thirst for revenge. Controlling Erica through a haunted dressing room mirror, the spiteful spirit attempts to bring the house down on opening night.