Frank, Joe, Callie, and Iola travel to the Middle East to recover a stolen art treasure and free their friend Chet Morton, who has been accused of the theft.

The adventures of the four Alden children as they spend a summer vacation on their very own island, purchased by Grandfather's father years ago.

When Nancy, Bess, and George visit a new Bio-Dome facility equipped with different world environments and animals, Sasquatch appears within the Arctic dome, creating havoc and endangering the future of the facility.

Someone has stolen money from the soccer team's car-wash earnings, and the students from Sifu Faiza's Kung Fu School must set aside their feud with the soccer players to figure out how much money was stolen and by whom.

While traveling across the country on the maiden voyage of a bullet train, the Hardy Boys are framed for murder, and soon they discover that they cannot rely on help from the A.T.A.C.--the secret spy organization that may have framed them.

Six children help solve the mystery of a missing spyglass that has kept two brothers feuding for years.

When Hinkley builds a prototype for a new high-efficiency car, he asks Nancy and her mechanic Bess to drive it in a government-sponsored race in which the winner receives a government development contract, but someone is determined to keep Nancy and Bess from winning.

Because they do not want to be separated, four orphaned children run away and live in an old abandoned boxcar

When equipment is stolen from Sifu Faiza's Kung Fu School, where students learn compassion and responsibility as they train their minds and bodies, four friends use basic math skills to track down the culprits.