After Daphne's Aunt Olivia receives a medallion of the Cat Creature, she has strange dreams about becoming the thieving feline.

When their plane crashes en route to Rio, the kids confront the legendary Jaguaro -- a creature half sabre-tooth tiger, half ape.

Old Iron Face, a legendary character who haunts the area around an island prison, terrorizes the gang.

Velma's friend Aggie summons the gang to Scotland to solve the case of the Loch Ness Monster, which is terrorizing guests at her hotel.

After an archaeologist discovers an ancient Turkish city, his workers are terrified by the Tar Monster, a legendary creature that protects the city.

A witch burned at the stake in 1779 suddenly appears in Salem, Massachusetts.

Professor Krueger summons the kids to the North Pole, where they confront a giant Snow Beast.

While vacationing on a sailboat, the kids aid Naval Intelligence to halt the mysterious disappearances of airplanes.

While visiting Velma's Uncle Dave, the gang find out he has been kidnapped from his home, and that a mysterious Williwaw is haunting the area.