Duckman (1994)

S4E14 Duckman and Cornfed in 'Haunted Society Plumbers'

Duckman and Cornfed take on plumbing work, landing their first assignment at a fancy gathering in a mansion. While Duckman neglects his duties, he stumbles upon the news that the infamous “Sharon Stone” diamond has vanished. Determined to retrieve it before the hostess finds out, he teams up with Cornfed. However, once the diamond's absence is unveiled, its notorious curse activates, trapping them both inside the mansion.