Mirrored stock footage from James and the Trouble with Trees is used.

This episode was filmed on the 23rd and 24th January 2002.

Sir Topham Hatt's Brown-haired Assistant ( cameo).

Once the mess is cleared up and Thomas is safely back on the rails, Cyril is reinstated as Misty Valley's fogman. He puts down a cap to warn them, just in the nick of time, or Toby would've crash into Thomas and his wreck otherwise. With Toby and Henrietta soon coming along, there is no way of stopping them until Cyril comes to the rescue.

Thomas comes along with a goods train, and because the horn is broken, he has no idea about the landslide until too late by derailing and stranding himself on the landslide. Ironically, after Percy is out of sight, the vibrations from the foghorn create a landslide, which sweeps onto the track and destroys it in the process. The foghorn is put on the hillside in Misty Valley, and while Percy is puffing through the valley the following day, the foghorn is sounded (to his displeasure). None of the engines are impressed and Thomas is very disappointed rather than unimpressed to hear this, especially because it sounds very loud and to them, sounds like a tugboat horn. He also says that Cyril will not be needed anymore, and will be given a much needed rest. Once he tries to test it, the ground shakes and the rumble makes a few slates of the sheds' roof fall off. That evening, the Fat Controller visits the engines at Tidmouth Sheds to tell them that he has acquired an electric foghorn. Thomas enjoys seeing Cyril, and puffing over the blasting caps due to that they make his axles tingle. This is why Cyril (a friendly fog signalman who lives in Misty Valley) earns his keep by putting detonators on the rails to warn the engines of fog and landslides. Misty Valley lies along a branch line, which is often very misty.

Thomas trainz misty island