Episode Title:
The Cursed Cabinet of Professor Madds Markson!.
Episode Description:
When Mystery Inc. accepts the invitation from reclusive millionaire Hugo Hauser to spend one night in the haunted Savannah Hotel in Las Vegas before its controlled demolition, they find that they're not alone. Magicians Penn & Teller have also accepted the challenge as they contend with the Ghost of Madds Markson and his monster.
