Baby Kate and the Imaginary Mystery

Summary
Pal and Kate fear Nadine has been kidnapped by the Tibbles, so they set out to investigate.

Characters

 * Kate Read
 * Pal
 * Nadine Flumberghast
 * Nemo
 * Treenie
 * Amigo
 * Timmy and Tommy Tibble
 * David Read
 * Arthur Read
 * D.W. Read
 * Mrs. Tibble
 * Uncle Wormy
 * Stanley
 * Jumbo
 * Mrs. Tibble's stuffed animals(cameo)
 * Tooth Fairy(cameo)
 * Pixies(cameo)
 * Rumpelstiltskin(cameo)

Trivia

 * 4th Wall break: Pal tells Kate that the viewers don't say anything even when Arthur talks to them.

Episode Connections

 * The Om_ble backpack from "D.W.'s Backpack Mishap" is seen in this episode.
 * Mashed Peas Theater is also seen in "Invasion of the Soccer Fans."

Errors

 * The Xfinity description guide calls D.W. a boy while saying, "D.W's imaginary friend Nadine is missing, so his real-life pals set out to find her".

Home Video
DVD:
 * Arthur: Season 11