The Flintstone Comedy Show

The Beast of Muscle Rock Beach [Pebbles, Dino & Bamm-Bamm] (1x38)

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A trip to the seashore turns into a nightmare when Pebbles, Dino and Bamm-Bamm confront the beast of the beach. After a long chase, Dino knocks the creature down and his head falls off revealing Fingers Sandstone, the notorious safecracker.