Arthur and the Haunted Tree House

"Arthur and the Haunted Tree House" is a one-hour TV special that premiered on October 23, 2017 on PBS.

Synopsis
"This Halloween is sure to be the spookiest ever for Arthur and his friends. While trick-or-treating, Francine meets an elderly woman with a very mysterious past, while Binky finds himself at Mr. Ratburn’s amazing haunted house (that’s scarier than math class!). And as for Arthur, Buster and Ladonna? Their tree house sleepover seems to be haunted...but by what?"

Major

 * Arthur Read
 * Buster Baxter
 * Muffy Crosswire
 * Francine Frensky
 * D.W. Read
 * Bud Compson
 * Binky Barnes
 * Ladonna Compson
 * Grandma Thora
 * Jane Read
 * David Read
 * Bailey
 * Ethel Saperstein
 * Nigel Ratburn

Minor

 * Mrs. Pariso
 * Golem
 * Zelda
 * Mr. Bellamy
 * Mr. Lancaster
 * Mrs. Lancaster
 * Baby Kate
 * Mr. Krueger
 * Mrs. Krueger
 * Mr. and Mrs. Krueger's daughter
 * Mr. Saperstein

Cameo

 * Brain
 * Emily
 * Oliver Frensky
 * Laverne Frensky
 * 3rd Grade Male Rat
 * Molly
 * James
 * Mr. Haney
 * Inky Krueger

Mentioned

 * Catherine Frensky

Trivia

 * Bailey's full name is revealed to be Bailey Carson Belvedere III in this episode.
 * The list of apartments Francine can trick-or-treat at in her building are as follows: 3, 15, 17, 28, 118, 121, 136, 142, 144, 221 (Mr. Bellamy), 224 (Mrs. Parizeau), 227, 229 (Mr. and Mrs. Lancaster), 237 (Mr. and Mrs. Saperstein)

Production notes

 * It is one of two hour-long specials produced as part of the Oasis Animation production deal (alongside Seasons 20 and 21); the first being D.W. and the Beastly Birthday.
 * Of the four Arthur specials, this is the first and only special to not feature musical segments with original songs.

Episode connections

 * Halloween also takes place in the episode "Hic or Treat". As such, Arthur, Buster, Francine, and Mr. and Mrs. Read all have the same costumes.
 * The Brain is seen wearing the bear mascot costume from the Ice Cream Shop in "Brain Freeze".

Errors

 * During U.S. airings on PBS, the opening title card is narrated by Ladonna, and she narrates, "Arthur and the Haunted Tree House, Part 1", but there is no Part 2 title card later on.