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Summary

A successful Halloween prank from the group enrages Sheldon, who promptly starts working on his revenge. His efforts all end up being fruitless, as Sheldon makes his pranks too obvious to the others by behaving oddly. Leonard reverses his prank on him, while Raj is delighted by the snake Sheldon puts into his desk drawer. He finally seems to have succeeded in tricking Howard with an electric handshake. When Howard breaks down because of a heart condition, Sheldon is terrified. Bernadette orders him to inject adrenaline into Howard's heart. After doing so, he is astonished to find out that it all was a ruse by Howard and Bernadette. Sheldon then ends up shocking himself while wondering how he could have fallen for that...

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