Alvin and the Chipmunks

Miss Miller's Big Gamble (4x6)

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After the Chipettes rig Miss Miller’s poker game, she takes them to Las Vegas and becomes a compulsive gambler. She is finally cured when another gambler defeats her in a high-stakes game of blackjack, only to return his winnings after she learns her lesson. The other gambler turns out to be David Seville, the Chipmunks' father, in disguise.