|Season Four, Episode Ten|
|Air date||December 7, 2012|
|Iron Hero||Snowed In|
Cold Wheels is the tenth episode of Season 4, and the forty-sixth episode overall.
One winter day, Eric was taking some Christmas supplies to Kirk Ronan. He was making good time but had to stop for a red signal at Wellsworth. Edward was there. They had a conversation on decorating the Kirk Ronan Branch Line. Soon, Eric had to leave as the signal turned green. He soon reached Maron but there was a snow pile on the tracks that Eric crashed into. Edward was sent to help out. The next evening, Eric was taking a heavily loaded passenger train with five coaches to the concert at Rolf's Castle. Eric had realized that The Fat Controller was on the train with his wife and kids, Emily, Richard and Charles. He soon left and headed back to Kellsthorpe Road. There was a commotion as Henry came into the station on the Main Line with the Flying Kipper. The people at the concert were snowed in. Eric was puzzled by the word "Snowed In" but Henry explained it to him. The Former Fat Controller needed an engine to help the people and chose Eric. Eric thought for a moment and agreed to it.
- Stephen Topham Hatt
- Charles Topham Hatt
- BoCo (cameo)
- Emily Helen Hatt (mentioned)
- Richard Topham Hatt (mentioned)
- Charles Nicholas Hatt (mentioned)
- This episode is the replacement for Phantom of the Quarry, as that episode was originally set in Season 4.