While scuba diving, Jonny Quest finds a valuable 17th century coin. Before he quite knows what is happened, Jonny and his friends are targetted for elimination by a band of greedy modern-day pirates. The "swim to the rescue" by Johnny's trusty dog, Bandit, and the climactic sea battle are two of many highlights in this breathtaking episode. "Skull and Double Crossbones" originally aired on November 27, 1964, by which time Don Messick had taken over from John Stephenson as the voice of Dr. Quest. ~ Hal Erickson, Rovi