A couple of new engines arrive on Sodor, one of whom starts causing trouble, forcing Constable Joey to take action.
Tropes featured in this episode:
- Batman Gambit: The sabotage Colleen does holds up several LNER trains.
- First Appearance: Of Flying Scotsman, Geoffrey and Colleen.
- Meaningful Name: Title wise: a sting is when police catch a criminal via undercover, which is exactly what happens here.