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The Amazing World of Gumball - Season 1 - Episode 13
The Amazing World of Gumball - The Mystery
The Amazing World of Gumball - The Mystery is the 13th episode of the series. It was aired on July 11, 2011.
In this episode, when his class finds Principal Brown wrapped up in toilet paper, shaved, and covered in green paint, Gumball decides to try and find the culprit or else face detention.
