Spongebob's Mystery With a Twistery Episode No.: 143 Season: 8 Airdate: 11 October 2010 Previous Episode: TBA Next Episode: That Sinking Feeling Characters Voice actors SpongeBob SquarePants Tom Kenny Spongebob's Mystery With a Twistery is a special from season 8. Info Characters SpongeBob Patrick Mr. Krabs Plankton Squidward Butler Places Krusty Krab Chum Bucket Plot When Mr. Krabs gives SpongeBob the only key to the vault holding the Krabby Patty's secret recipe, SpongeBob vows to guard it. 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"? Two books based on this episode, "The Great Patty Caper" and "The Great Train Mystery", will be released in September. The original title for this episode was Krabby Patty No More.