Bertie's Chase is the third episode ever made in Season 2.
Edward, unaware that Bertie is racing to Wellsworth with Thomas' passengers, leaving the station. Bertie sees him and tries to catch him waiting at a crossing, but Edward leaves just before Bertie arrives. Bertie races after Edward again, and finally catches him. Bertie explains his tale, the passengers scramble aboard, and Bertie goes to tell Thomas the news.
- Whilst the fireman is climbing out of the window, a gap can be seen where the cab roof has come loose.