He dressed up as the Haunted Horseman to scare off visitors away from Hagglethorn Hall so he could take it over, dismantle the castle, and sell the bricks for souvenirs. He had help from Cyrus Wheatley, a farmer, who dressed as the Moat Monster so he could collect half the money from the sale of the castle. After they were caught, Creech, the castle butler, asked if he should call the authorities. However, the duke pointed out that doing this would bring great shame to the family name. So, instead, the two culprits had to use their disguises to help attract visitors and raise money for Hagglethorn Hall. The duke had to dress up as the Haunted Horseman and ride through the halls three times a day, giving him saddle sores.