Thomas the Tank Engine Wikia

Don't Tell Thomas

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This article is about the episode. You may be looking for the Chinese book.
"Is that part of the surprise?"
"That is for me to know and you to find out.
— Thomas and Emily

Don't Tell Thomas is the ninth (sixteenth in Australia) episode of the eighth season.


The engines plan a surprise party for Thomas to thank him for his work clearing the lines of snow, but they keep the details away from Thomas, who is naturally furious that they are not letting him in on the secret. First, at a level crossing, Thomas sees Percy with colourful presents loaded in his trucks. Thomas asks him if they are part of the surprise, but Percy does not care; he just puffs off. Next, he sees Emily with a Christmas tree loaded on her flatbed. Thomas asks her if it is part of the surprise, but Emily, annoyed, tells him that it is something for her to know and for him to find out. She then puffs away and Thomas, while pulling Annie and Clarabel, follows her on the same line. However, the points switch, making Thomas go straight on.

Back at Tidmouth Sheds, everyone is excited about the surprise. Just as Thomas arrives, Henry and James warn the other engines not to tell him about the surprise. Thomas is still furious that he does not know what it was, so he just exits. He eventually goes to sulk in a siding, but later Harold convinces him to go to Wellsworth, where Thomas discovers a Christmas party is being held especially for him.




  • Going by production order, this is the sixteenth episode of the eighth season.
  • A CGI re-enactment was going to appear in the fifteenth season episode, Percy the Snowman, but was dropped for unknown reasons.
  • This is the first episode of the series to feature every member of the Steam Team in an episode.
  • This is the only episode of the eighth season where The Fat Controller does not make an appearance.
  • This episode marks the only appearance of Upper Brendam station.


  • In one shot at the sheds when the engines are discussing Thomas' surprise, Thomas can be seen next to Percy.
  • When the camera turns above Annie and Clarabel, its shadow can be seen.
  • When Thomas is ploughing the snow, a piece of string can be faintly seen in the snow pulling him along the track.


In Other Languages

Language Name Meaning
Dutch Thomas Moet je Niet Weten Thomas Must Not Know
German Thomas Platzt vor Neugier Thomas is Bursting with Curiosity
Spanish No se lo Digáis a Thomas / No le Cuenten a Thomas Do Not Tell Thomas / Don't Tell It To Thomas
Portuguese Não Contem a Thomas Don't Tell Thomas
French L'anniversaire d'Thomas / Non Raconte Thomas Thomas' Anniversary / Don't Tell Thomas
Danish Overraskelsen Surprise
Norwegian Ikke si Noe til Thomas Don't Say Anything to Thomas
Swedish Säg Inget Till Thomas Do Not Tell Thomas
Hungarian Thomas és a Meglepetés Thomas and the Surprise
Catalan No Li Digui Thomas Don't Tell Thomas
Flemish Het Ontbrekende Verjaardag Van Thomas Thomas' Missing Anniversary
Finnish Tuomas "Yllätys Thomas' Surprise
Italian Non Ditelo a Thomas Don't Tell Thomas
Romanian Să Nu Alfe Thomas! Thomas Does Not Find Out!
Gaelic A Chuirm Dhiomhair A Jolly Mystery
Polish Nie Mówcie Tomkowi Do Not Say Thomas
Czech Neříkej to Tomášovi Do Not Tell Thomas
Croatian Nemojte Reći Tomici Do Not Say Thomas
Slovak Nehovor to Thomasovi Do Not Say That Thomas
Japanese トーマスにはないしょ The Secret to Thomas
Chinese 别告诉托马斯 Do Not Tell Thomas
Russian Не говорите Томасу Do Not Tell Thomas
Greek O έχασε την επέτειο The Lost Anniversary
Korean 토마스에겐 비밀이야 It's a Secret to Thomas
Thai อย่าบอกโธมัสนะ Do Not Tell Me Thomas

Home Media Releases


DVD Boxsets


  • Peep! Peep! Hurray! Three Cheers for Thomas
  • The Complete Eighth Series

DVD Boxsets


DVD Boxsets



  • Holiday Express


  • Holiday Express







DVD Boxsets


DVD Boxsets


  • Thomas the Hero



DVD Packs



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