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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.


It is winter on the Island of Sodor and the holidays were coming, in which Thomas enjoys annually. The stationmaster's decorating of the station and the children's snowmen are a beautiful sight. Unfortunately, there had been heavy snow so Thomas had to work hard to clear all of the lines of snow. As a result, all of the engine's journeys and jobs were done on time. All of the Fat Controller's engines are so pleased that they want to thank Thomas for all the hard work, with a surprise party.

After clearing the last lines of track, Thomas looks forward to seeing his friends, whom he misses. Thomas puffs to the station and sees Harold and Toby. When Thomas tries to say hello, Harold warns Toby to keep the details away from Thomas about the planned surprise party, who is left out for not being part of the secret. When Thomas arrives at another station, he sees Percy with colourful presents loaded in his trucks. Thomas asks him if they are part of the surprise, Percy bursts to tell Thomas about it but he puffs off immediately, making Thomas cross.

Later that afternoon, Thomas waits a signal and sees Emily with a Christmas tree loaded on her flatbed truck. Thomas asks her if it is part of the surprise, but Emily, crossly 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. Emily turns towards one of the branch lines. But as Thomas approaches, the points change, making him stay on the main line.

Back at Tidmouth Sheds, everyone is excited about the surprise. Just as Thomas arrives, Henry warns 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 to sulk in a siding. Later, it is time to show Thomas the surprise but the engines are unsure where Thomas has gone. Edward convinces Harold to find Thomas, and when Harold finds Thomas, he convinces him to go to Wellsworth, where Thomas collects the children. Thomas then arrives at a country village station and discovers the surprise turns out to be 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 of this episode was going to appear in the fifteenth season episode, Percy the Snowman, but was dropped for unknown reasons.
  • This was the first episode of the series to feature every member of the Steam Team together.
  • This was the only episode of the eighth season where The Fat Controller did not make an appearance and where Harold did make an appearance.
  • This episode marks the first and only appearance of Upper Brendam station to date.


  • 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 Tuomaksen Yllätys Thomas's 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
Serbian Ne recite Tomasu Do Not Tell Thomas

Home Media Releases


DVD Boxsets


  • Peep! Peep! Hurray! Three Cheers for Thomas
  • The Complete Series 8

DVD Boxsets


DVD Packs



  • Holiday Express





DVD Packs







DVD Boxsets


DVD Boxsets



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