Ep 3. The Case of the Girl with the Long Face/The Substitute Arthur

In season 18 episode 3 of Arthur, titled "The Case of the Girl with the Long Face/The Substitute Arthur," the gang at Lakewood Elementary is in for some unexpected surprises.

In the first half of the episode, "The Case of the Girl with the Long Face," Arthur and his friends are trying to figure out why Sue Ellen is acting so strange. She's being unusually secretive and withdrawn, and her friends are worried about her. When they finally confront her, she reveals that she's upset about her appearance - she thinks her face is too long and that people are making fun of her. The gang tries to reassure her that she's beautiful just the way she is, but Sue Ellen is still self-conscious. They come up with a plan to help Sue Ellen feel better about herself, which involves a surprise makeover and some words of encouragement from the gang.

In the second half of the episode, "The Substitute Arthur," the class is excited to hear that Arthur is going to be absent for the day, until they find out who his substitute is - Francine's older sister, Catherine. Catherine is known for being a bit of a strict disciplinarian, and the class is apprehensive about what the day will bring. To their surprise, Catherine turns out to be a pretty fun teacher, and the class actually enjoys her lesson. But things take a turn when she discovers that someone has been drawing on the walls. Catherine suspects that it was Arthur, and when he returns to class the next day, he's in big trouble. Arthur tries to clear his name, but no one believes him - until they discover the true culprit and apologize to Arthur.

Overall, "The Case of the Girl with the Long Face/The Substitute Arthur" is a heartwarming episode that deals with issues of self-esteem and fairness in the classroom. Fans of Arthur will enjoy seeing some familiar characters in new situations, and the episode has a positive message that kids will appreciate.