Sam and Dean go undercover in a haunted prison to stop a vengeful spirit.
Based on popular shows where Season 2, Episode 19 features ghosts or major supernatural twists, here are the most likely candidates for your write-up: [S2E19] Haunted Surprise
While not titled "Haunted Surprise," it is a quintessential haunting episode where the brothers deliberately get arrested to investigate a ghost. Sam and Dean go undercover in a haunted