Once again Nancy Drew is involved in a mystery as she tries to locate an archaeologist who disappeared with the clues to a buried treasure.

Embarking on a dream vacation in Nantucket, Nancy, Bess, and George attend the opening of an exhibit at a local museum where a vandal has left a threatening message, prompting the girls to investigate numerous suspects.

Nancy arrives in Arizona, looking forward to a fun-filled vacation at Shadow Ranch, but abruptly finds herself involved in a baffling mystery.

While in Belgium investigating the mystery surrounding an antique cross, Nancy and her friends learn that her entry in a short story contest may somehow be involved.

Teenage detective Nancy Drew finds herself in danger when she sets out to track a jewel thief.

When a cash box is stolen from a visiting carnival, Nancy endeavors to clear the name of her accused friend, Ned, and uncovers a complicated plot involving financial mismanagement, a setup and other sinister activities.

Nancy Drew and her friend George Bess win a vacation to an eco-resort in Costa Rica. But after a string of increasingly dangerous "accidents," it seems that there is a jealous predator staying at the resort, making trouble for the management and the guests. Against the urging of her friends, Nancy takes on the case to get to the bottom of it before the entire week at Casa Verde is ruined -- or worse. Can she uncover who is sabotaging the resort before...

"Nancy and her friends must try to figure out why a girl is acting strangely after visiting a haunted house in this sixteenth book of the Nancy Drew Diaries, a fresh approach to the classic mystery series."--

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.

Dear diary...
Who would want to harm a horse? I kept asking myself that question while watching the beautiful jumpers at the annual River Heights Horse Show. The top riders from all over the country are here, and one of them, Payton Evans, is a close friend of Ned's family. She's been training for years, and Ned said she might even make the Olympic team. But just when Payton was supposed to compete in this show, everything went horribly...