Suspecting that their friend has been swindled, the Hardy brothers investigate and find themselves on the trail of a much larger criminal operation.
While visiting their friend Wallis and her adopted daughter on Mount Desert Island, Maine, Josh, Dink, and Ruth Rose investigate why three white wolf cubs were stolen, and by whom.
The blatant acts of a lady swindler posing as Nancy Drew arouse the suspicion of friends and local police against the real Nancy.
The search for missing gold takes the Hardy boys to the Yucatan Peninsula where they uncover a second mystery.
Nancy and her friends go to Hawaii to solve a mystery involving an inheritance.
The Hardy boys dial a wrong number, get the Pentagon, and suddenly find themselves in a dangerous adventure involving national security.
The sleepy town of Heartsdale, Georgia, is jolted into panic when Sara Linton, the town's pediatrician and coroner, finds Sibyl Adams, a young college professor, dead in the local diner.
While searching in Iceland for a missing sailor sought by an insurance company, the teen-age detective brothers uncover a plot threatening the life of a United States astronaut and the secrets of NASA's moon project.
A chance meeting with a stranger on the road provides the Hardy brothers with a clue to a gang of local burglars.
When a cat appears in their classroom one rainy day, Cam and her friend Eric figure out where it came from.
Their efforts to recover a stolen ancient chess piece lead the Hardy brothers to Hong Kong where they help smash an international criminal organization.
While searching for the guard end of a broken saber that will solve one mystery, the Hardy brothers become involved with a gang of bank robbers.
After recovering his mom's purse, Franklin decides to put his detective skills to work for his friends.
Nancy Drew tackles a mystery professional detectives failed to solve--finding a valuable centuries-old message in a hollow oak tree in Illinois.
The Wyoming governor promises Pickett his job back if he investigates a killing in Yellowstone that circumvented both federal and state law.
Nancy investigates her friend's guardians, who are trying to steal her inheritance.
In solving the mystery of two medallions missing from an inherited curio collection, the Hardys wind up in a desolate area of Guatemala at the mercy of dangerous thugs.
In trying to trace a missing will, detectives Frank and Joe Hardy trap a dangerous criminal who is willing to risk all--including murder--for money.