When the Hardy Boys set out to solve the mystery of their missing chums, they discover a gang hide-out in a cave on an island along the way.

When Scooby and the gang dress up for a night out at the Palace Theater, they expect to meet stars--but not a phantom! They need to solve mystery quickly, or the show may close before it opens.

Nancy and her friends help a woman search for her missing grandson.

Rushing to the sleepy seaside village of Porthaven to help her grandmother when her granddad mysteriously vanishes, Mia discovers a diary on an empty fishing boat and begins exchanging notes with a local girl who makes excuses for not meeting Mia in person, adding to an already mystifying situation.

Hugo, a young sasquatch, and his friend Gigi use a Monster Detector to find a Green Whistler, but when Hugo's human friend, Boone, joins in, surprises are in store.

When Scooby-Doo and his friends attend a screening of the movie The wandering witch, they discover that someone doesn't want the movie to come out. When Bucky Lowell disappears, and a witch seems to be involved, they set out to solve the mystery.

Nancy encounters a mysterious saleswoman in a perfume shop, a curious man on the train, and then finds herself trying to decipher a strange code.

Nancy Drew and friends Bess and George track a group of swindlers and kidnappers from New York to Mexico City to Los Angeles where they finally solve the mystery of the Triple Hoax.

Geronimo Stilton gets caught up in the World Karate Championships, thanks to the efforts of Bruce Hyena and Piccolo Tao, Bruce's super-sporty cousin. Geronimo only has a week to become real champion material! Will Geronimo manage to overcome his fears in order to win the competition?