Arthur - Season 11 - Eps 9: Baby Kate and the Imaginary Mystery
When Nadine misses an appointment for tea with Vicita's imaginary friend, Tweenie, Baby Kate and Pal grow concerned. They launch an investigation, worried that she may have been kidnapped by the Tibbles. Along the way, Francine's cat Nemo is pulled into the investigation.
About Arthur

Title: Arthur
First Air Date: 1996-10-07
Last Air Date: 2022-02-21
Status: Ended
Rating: 7.043/10 (from 161 votes)
Language: EN
Seasons: 26
Total Episodes: 493
Network: PBS
Genres: Animation, Comedy, Kids, Family
Production Companies: CINAR, 9 Story Media Group, Cookie Jar Entertainment, DHX Media, Oasis Animation, GBH, WildBrain Studios
Synopsis
The show revolves around the lives of 8-year-old Arthur Read, an anthropomorphic aardvark, his friends and family, and their daily interactions with each other.
Cast

Bruce Dinsmore
Mr. Read / Binky Barnes / Bailey (voice)

Jodie Resther
Francine Frensky (voice)

Daniel Brochu
Buster Baxter (voice)

Roman Lutterotti
Arthur Read (voice)

Melissa Altro
Muffy Crosswire (voice)

Sonja Ball
Mrs. Read (voice)

Arthur Holden
Mr. Ratburn / Bionic Bunny (voice)

Tracy Braunstein
Baby Kate (voice)

Simon Peacock
Pal (voice)

Ethan Pugiotto
D.W. Read (voice)