You will Watch The Scooby-Doo Show Season 3 Episode 16 online for free episodes with HQ / high quality. Stream cartoons The Scooby-Doo Show Episode 40 The Beast is Awake in Bottomless Lake. In Canada on a fishing trip, the gang soon encounter a small, empty town. The townsfolk have been scared away by a beast who lives under the nearby lake, and it wants the gang to stay away too. The gang must go under the lake to see what this beast is up to.