Denholm seems awfully suspicious... until Lady Carson reveals she might have a motive. Ken and Marcus arrive in London. Cassidy makes an unexpected move.
With the competition looming and Pepper still on the loose, the Carsons need another horse — and someone to ride her. The gang sets a trap for Giovanni.
Who swiped Martin the Magnificent's crystal? The Barbies consider their suspects while investigating why Madame Celeste is acting even odder than usual.
There's a ghostly green glow coming from the sea caves, then suddenly... it's gone. Later, a bitter feud between Warlock and MC D-Dub explodes on stage.