Don't Tell Thomas

"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.

Plot
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 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 doesn't care; he just puffs off. Next, he sees Emily with a Christmas tree loaded on her flatbed. Thomas asks her if it's part of the surprise, but Emily, annoyed, tells him that it's 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.

Characters

 * Thomas
 * Edward
 * Henry
 * James
 * Percy
 * Emily
 * Harold
 * Toby (does not speak)
 * Gordon (cameo)
 * Annie and Clarabel (cameo)

Locations

 * Tidmouth Sheds
 * Dryaw
 * Wellsworth
 * Maron
 * Maithwaite
 * Three Tier Bridge
 * Bulgy's Bridge
 * Upper Brendam
 * Killdane Junction

Trivia

 * Going by production order, this is the sixteenth episode of the eighth season.
 * A CGI reenactment was to appear in Percy the Snowman, but was dropped for unknown reasons.

Goofs

 * 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 the US narration, the term trucks is used once.

Merchandise

 * Books - Don't Tell Thomas (China only)

Home Media Releases
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UK

 * Peep! Peep! Hurray! Three Cheers for Thomas
 * The Complete Eighth Series
 * Christmas Express

DVD Boxsets

 * Triple Pack
 * The Ultimate Collection
 * 5 Adventurous DVDs
 * Classic Collection
 * Ultimate Christmas Gift Set

AUS

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

DVD Boxsets

 * 60th Anniversary - Limited Edition Boxset
 * Complete Series 1-10
 * The Essential Collection (5 DVD Boxset)

US

 * Thomas' Sodor Celebration!
 * Holiday Express

DVD Boxsets

 * Celebrate with Thomas
 * 60th Anniversary DVD
 * Steamies vs. Diesels and Other Thomas Adventures/Thomas' Sodor Celebration!
 * Fun Pack
 * Holiday Favorites

MYS

 * Holiday Express
 * Don't Tell Thomas and Other Adventures
 * Percy and the Magic Carpet and Other Adventures

TWN

 * Holiday Express
 * Thomas and Friends Volume 22 (Taiwanese DVD)

CHN

 * Holiday Express

NOR

 * Christmas Special

JPN

 * Thomas the Tank Engine Series 8 Vol.1

IDN

 * You Can Do It, Toby! and other stories

GER

 * So Many Surprises

POL

 * Thomas and Circus

HUN

 * Thomas the Tank Engine 4 - Gordon, a Role Model

DVD Boxsets

 * Thomas the Tank Engine & Gift Keys extension box

SPN

 * Thomas and Friends - Volume 2 (Spanish DVD)

DVD Boxsets

 * First Season (Spanish DVD)

SWE

 * Thomas the Hero

THA

 * Thomas and Friends - Volume 37 (Thai DVD)

ROM

 * Beep! Beep! Hooray!
 * Thomas and Friends - Vol. 4 (Romanian DVD)

DVD Packs
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 * Triple Pack 3
 * Six DVD Set