The gang heads over to the Showboat to see Dixie Doo, a cousin of Scooby Doo. But before long, all the customers are scared away by the ghost of Col. Beureguard, who is looking for Magnolia. She believed he stole her priceless emerald necklace, so she refused to marry him all those years ago. Can the gang solve the mystery and rid the showboat of it's haunts?
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