Spy vs. Spy

Fireplace (3x20)

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White Spy takes a stick of dynamite from Black Spy's stocking and replaces it with a lump of coal and hides in his chimney. When Black Spy appears, he looks in his stocking and finds the coal in it. So, he lights a fire and throws the coal in it, causing the flames to grow bigger and bigger and it ignites the dynamite, blowing up White Spy. Merry Christmas again, spies!