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The Alphabet Train is the twenty-first episode of Blue's Clues from season 5.


Joe and Blue are creating an alphabet train, with the help of their friends. They’re going to be boxes from A to Z connected to the train and each one will contain something to represent that letter. Joe and Blue help the characters throughout to figure out what they can put it the boxes and also help to make sure everything is in order. The skidoo trip takes them into a magnet board, where they find every more things for the boxes. Once the train was complete, they join in a song about the alphabet and objects.


  • Question: What should we put in the last alphabet box?
  • Clues:
    1. The color White
    2. The color Black
    3. The Letter Z
  • Answer to Blue's Clues: A zebra
  • Skidoo: Magnet board
  • Living room picture: An alphabet train with an "A" box in it


This episode starts with Joe (in his Orange Shirt) saying hi to the viewers, and he said that they needed help today because there is making an alphabet train. First, there is the letter A, and we find an airplane that starts with A. Next, there is B and Blue comes to the letter B box. Then we help Tickety Tock sort out the C, D, and E boxes. A crayon starts with C, a drum starts with D, and an eagle starts with the letter E.

Then, we came to Sidetable Drawer for the notebook, and she has something for the letter F box, a fox. After Blue's Clues was explained, we start looking for clues. Then, there is a clue on a white spot.

Then we go to Pail for the G, H, and I boxes. The options were globe, pumpkin, ice cream, hat, or mittens. Respectively, G, H, and I are a globe, hat, and ice cream. We then hear Pail joke about the letter J and Joe found out that he was for the J box.

Then, Periwinkle had a leaf for the L box, a kite for the K box, and mittens for the M box (just like the ones we saw before). Joe sang the song to see, it goes "A B C D E F G H I J L K M" but it is wrong. K and L would trade places to be right.

Then, Tickety Tock had something for the N box, newspaper. Then Joe found another clue on a black spot. After the 2nd clue review, Maitlime commenced. And Mailbox founded something that starts with O, an oval. Then Joe got a letter.

After that, something that starts with P was found, Periwinkle and Pail.

Then Slippery Soap asked questions for Q and R with the answers being queen and rainbow. Then there was the S for Slippery Soup and T for Tickety Tock. Periwinkle brought a ukulele for the U box.

Then we see Joe and Blue skidooing to the Magnet Board, and then they were finding something for V, W, and X. Volcano came for the V box, the wagon was for the W box, and x-ray was for the X box. Then they see a Y. It made a yo-yo. Then there was a clue on the letter Z. Then after he wrote it down, it was time for the thinking chair, but Pail called Joe to put the yo-yo down. Joe then sits for the thinking chair review. The answer was a zebra.

Then, the train was finished, and Joe sings I'll Never Forget My Alphabet. After the song, the episode ends.

Characters Present


  • Joe had a ton of friends due to 26 in the video letter holding each letter. Included are Elizabeth Rose Anderson, a relative of former Content Consultant Dr. Dan Anderson, Ariella Richardson, a relative of the voice of Baby Bird, Daniel Richardson, Yusuf Smith, a relative of retired Scripting & Development Manager, Michael T. Smith, and Austin Williams, a relative of another friend of Joe, Samuel Williams.
    • In the letter, the list of kids' names in Alphabetical Order were:
  1. Ariella
  2. Briana
  3. Charlie
  4. Daniel
  5. Eli
  6. Franklin
  7. Georgia
  8. Haley
  9. Ian
  10. Julia
  11. Kadambari
  12. Lucy
  13. Manosha
  14. Nicolette
  15. Oscar
  16. Penelope
  17. Quentin
  18. Rebecca
  19. Samantha
  20. Teresa
  21. Ursula
  22. Vanessa
  23. William
  24. Xavier
  25. Yusuf
  26. Zoe
  • Due to I'll Never Forget My Alphabet at the end of this episode, Joe does not sing The So Long Song.
    • This song was used in Nick Jr.'s Word Play segment in 2012.
  • This episode surprisingly was produced before Joe's Surprise Party.
  • This marks the last time the "Play Blue's Clues" footage from Can You Help? is used.
  • This is also the second time where The So Long Song was not featured. The first one is I'm So Happy!, and the next one is Body Language.
  • During the rest of I'll Never Forget My Alphabet, Joe got out of the J box to look at the rest of the letterboxes and Joe says goodbye to the viewers as the train takes off with the J box remaining empty.
  • In 100th Episode Celebration, a clip of it was seen in "The Songs We've Sung" montage before this aired and was then in the sneak peek.
  • Joe took the Yo-Yo with him when he skidooed back home. There was another episode titled Blue's Big Holiday where Steve took three things from the skidoo segment. Also in Mailbox's Birthday, Math!, and Blue's Birthday (the three episodes where Steve and Blue skidooed to the present store - in the third mentioned, it was just Steve), the bought products were brought out of the skidoo.
  • This is the second episode to feature a black crayon and the third episode to feature a white crayon from Animal Behavior! and Imagine Nation.
  • This episode appeared on the 2005 VHS/DVD release of Alphabet Power.
  • This is the second episode with letters.
  • This is the first Joe episode with letters. The second was Let's Write!.
  • Joe wears an orange squared shirt in this episode.
    • This is also the fifth time in the series Joe wears his orange shirt.
  • This is the last episode to use Joe's Playing Store footage of the Mailtime song.
  • Joe was seen getting into the J box car, but after the J box car leaves, Joe suddenly comes out.
  • This episode bids farewell to Mailbox’s 1st credit action altogether, previously the mirrored reflection in Joe's First Day. Beginning with Blue's Predictions, he will permanently do his 2nd action only. This episode also bids farewell to Shovel appearing by himself without Pail in his proper position. He will appear by himself one more time in his mirrored reflection from What's So Funny? in I Did That!, before leaving altogether.
  • The zebra in this episode looks like Henrietta from Blue's Collection, but that's not really her.


Watch Episode

This episode is available for streaming on ViacomCBS' video streaming service Paramount+.
Blue's Clues Season 5
Can You Help? | Colors Everywhere! | The Snack Chart | The Big Book About Us | Playing Store | Patience | 100th Episode Celebration | Joe's Surprise Party | I'm So Happy! | The Boat Float | Bedtime Business | Shape Searchers | Blue Goes to the Doctor | Contraptions! | A Brand New Game | A Surprise Guest | Dress Up Day | Blue's Big Band | Up, Down, All Around! | Story Wall | The Alphabet Train | Numbers Everywhere! | Blue's Predictions | Our Neighborhood Festival | Blue Takes You to School | Meet Polka Dots! | The Scavenger Hunt | Let's Write! | Magenta's Messages | Body Language | Blue's Big Car Trip | Look Carefully... | I Did That! | Animals in Our House? | Morning Music | Blue's First Holiday