All Will Be Revealed!

Summary
D.W., Bud, and Rapty set out to solve the mystery of what really happened to D.W.'s snowball.

Characters

 * Arthur Read
 * Billy Snailgoat
 * Bud Compson
 * Buster Baxter
 * D.W. Read
 * Maxine
 * Nadine Flumberghast
 * Rapty
 * Stanley
 * Uncle Wormy
 * Waldo
 * Frumpus
 * Tooth Fairy
 * Alien troll
 * Treenie
 * Platy
 * Billy Snailgoat
 * Snooter
 * Ghost-doe
 * Cyber manatee
 * Bo Baxter (indirectly mentioned)
 * Rapunzel (mentioned)
 * Skip Bitterman (mentioned)

Trivia

 * This episode reveals that Nadine is the one who took D.W.'s snowball, finally solving the mystery as to who took D.W.'s snowball in the first season episode "D.W.'s Snow Mystery." Nadine witnessed an alien troll steal the snowball, and reversed time, replacing it with a white croquet ball. Nadine didn't return the snowball, suspecting that Arthur would steal it.
 * This marks the first appearance of W.D.'s imaginary friend Maxine since her debut in the fifteenth season episode "Best Enemies."
 * This is the first episode to be written by Greg Bailey.
 * This episode will premiere on presidents day.
 * Timeline:
 * Arthur mentions D.W. taking and destroying his model airplane from "Arthur's Big Hit."
 * Bud's favorite cupcake icing color being red is a fact that was previously established in "Read and Flumberghast."
 * This episode reveals that Buster can see Rapty in his non-toy form just like Bud can.

Episode connections

 * Many items from past episodes are seen in this episode. These include:
 * Tommy Tibble's "_OM__ __B_LE" backpack (from "D.W.'s Backpack Mishap")
 * Skip Bitterman's Mystery Stew #8 (from "The Great MacGrady")
 * The singing swamp frog (from "The Tattletale Frog")
 * Woogles (from "Arthur Rides the Bandwagon")
 * The hot-air balloon with the "10" on it from the book 93 Million Miles in a Balloon (from "Unfinished")
 * A poster of Kresblain the Merry Magician (from "The Ballad of Buster Baxter")
 * A Love Duck (from "That's a Baby Show!")
 * The New Fün Stüff Turvallisuus (from "Some Assembly Required")
 * The goose from Confuse the Goose (from "Arthur's Almost Boring Day")
 * The bobbin (from "What is that Thing?")
 * Tower of Cows (from "Double Tibble Trouble")
 * Spaghetti marshmallow balls (from "Opposites Distract")
 * A bag from Enguan's (from "Sue Ellen's Little Sister")
 * The car from Megalopolis (from "The Substitute Arthur")
 * The defective Mutant Muck Monster (from "Arthur's Toy Trouble")
 * Funny Farm (from "Arthur Plays the Blues")
 * Raulito (from "Buenas Noches, Vicita")
 * The wedding cake topper (from "The Secret Life of Dogs and Babies")
 * Yamlet (from "Prunella the Packrat")
 * The crab nebula is first mentioned in "Bitzi's Beau".

Goof

 * Despite the synopsis saying D.W. was going to help Bud and Rapty solve the mystery of the snowball, it was actually Buster who helped Bud and Rapty.

Home video
DVD: Believe in Yourself!