Arthur
Season 4, Episode 17: What is that Thing?
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Arthur and his friends are facing impossible tasks, and they encounter a device that could help them fix all those problems, but they do not know what it is.
All Episodes - Season 4
Episode 1
D.W.'s Library Card
Episode 2
Arthur's Big Hit
Episode 3
Hide and Snake
Episode 4
Muffy's New Best Friend
Episode 5
Buster's Breathless
Episode 6
The Fright Stuff
Episode 7
The Contest
Episode 8
Prove It
Episode 9
The Blizzard
Episode 10
The Rat Who Came to Dinner
Episode 11
D.W. Tale Spins
Episode 12
Prunella Gets It Twice
Episode 13
Binky Barnes, Wingman!
Episode 14
To Beat or Not to Beat
Episode 15
1001 Dads
Episode 16
Prunella's Prediction
Episode 17
What is that Thing?
Episode 18
Buster's Best Behavior
Episode 19
My Music Rules
Episode 20
That's a Baby Show!