The gang heads off to a fishing trip with Velma's uncle John, only to find Uncle John missing--and long dead Vikings and their ship haunting the area!

Lisa Banoh must be good friend of the Gang's seeing they decided to visit her on an island called 'Great Skull Island'. It is her 18th birthday after all, but still, did she have to have it on an island inhabited by vampire bats!

The gang heads to the southwest to watch a hang gliding contest, only to run into a ghostly pterodactyl!

The gang goes to watch a grand prix race, only to run afoul of a phantom race car driver that makes the other drivers and their cars disappear!

It was a dark and stormy night that the gang chose to spend the night in the Hatfield's cabin. It was so dark and stormy that a witch decided to come out and play 'Turn the humans into frogs' with the Hatfields. Discovering that their friends are now frogs, the gang sents out to find themselves a witch and hopefully wrap up another mystery.

After winning a contest, the whole gang goes on a vacation cruise. On board the ship is a rather nice professor, along with some investors of his who are interested in his time machine. Testing out his time machine, for his investors, the professor unleashes a monster from five thousand years in the future into our modern world. Trapped on the boat, the gang have nothing else to do but return the mean monster to the future.

The gang is having a beach party when a bizarre monster emerges from the deep. Soon after they meet an old sea captain who tells them about the monster, only to have it steal his soul!