Dennis the Menace and Gnasher

Haunted House (2x6)

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Dad’s ghastly aunts return from their 20-year long holiday expedition ten years earlier than expected, and quickly prove themselves to be a big match for Dennis with their "Etiquette Assault Course". But when his attempts to scare them out of the house only leads to an extended stay, he’s determined to discover the truth about these unwanted houseguests.