Scooby-Doo and Guess Who? Season 1 Episode 18 - The New York Underground Episode Title:The New York Underground.Episode Description:Scooby surprises Shaggy by secretly entering him into a poetry slam against Halsey, with the winner being awarded an antique brass key to the city. The poetry slam is interrupted when a Gator Man Monster attacks, stealing the key and escaping with it, but not before an impression of the key is made into a burrito stuck to Scooby's stomach. Using the impression, they are able make a replica with a symbol on the key leading them to the mysterious New York Underground, a strange cafe where patrons pay for food with poetry, the Keeper of Knowledge, and the mysteries that lie beyond.