Air Date: Nov 11, 2010

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When Mr. Krabs gives SpongeBob the only key to the vault holding the Krabby Patty's secret recipe, SpongeBob vows to guard it with his life. Read More

When Mr. Krabs gives SpongeBob the only key to the vault holding the Krabby Patty's secret recipe, SpongeBob vows to guard it with his life. But as soon as SpongeBob and Patrick board the train to retrieve the recipe, the key is mysteriously missing. Who could have stolen the Key? Was it the sneaky Plankton? Or was it the "butler"? Read Less