

The 1977 and 1978 episodes were originally broadcasted as segments on the package show Scooby's All-Star Laff-A-Lympics and Scooby's All-Stars. The 1980 episodes featured Captain Caveman and the Teen Angels in their own half-hour timeslot.

Ms. Snowden is supposed to be the heir to a fortune. But she must stay on the island, or her relatives will inherit the fortune. Captain Caveman and the Teen Angels are called in to investigate when the relatives start disappearing thanks to a mysterious sea creature.
Aired: 3/8/1980
The gang tries to uncover the truth behind the theft of a ventriloquist's dummy.
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