Are You Afraid of the Dark? S04 E10 The Tale of the Fire Ghost

"Submitted for the approval of the Midnight Society, I call this story..."

While celebrating their dad's birthday at the firehouse he works at, Jimmy and Roxanne end up being left alone when a call comes in and the firefighters must take off to stop a fire. They soon find that they're not exactly the only occupants of the firehouse. There's a fire ghost who's seeking revenge.