The disappearance of a seventeen-year-old girl leads Nancy into an intriguing mystery involving a castlelike building with a drawbridge.

Nancy Drew and her friends go on a ghost hunting expedition and become involved with a gang of thieves who concentrate their activities on collectors of valuable shells.

Nancy Drew must use clues in a dead man's letters to find some unpublished musical manuscripts that will save an old man and his granddaughter from financial ruin.

While helping the police find the owner of a mysterious house with a crooked staircase and an unpredictable robot, Nancy Drew, girl detective, also helps capture a swindler.

An antique dealer?s revelation about a former queen?s priceless heirloom starts Nancy on a trail of exciting adventures. Madame Alexandra, now living incognito in River Heights, asks Nancy to find her missing grandson. With only one clue to go on ? a faded photograph of the prince at the age of four ? the young detective begins her search.

Nancy Drew tackles a mystery professional detectives failed to solve--finding a valuable centuries-old message in a hollow oak tree in Illinois.

Nancy and her friends find they have to overcome people's superstitions and fears in solving the case of a "jinxed" and threatened bird farm.

A fiery glowing eye in a museum, the abduction of Ned, the code name Cyclops, and a pilotless helicopter draw Nancy and her friends into a dangerous investigation.

Nancy Drew joins the circus in order to investigate the mystery surrounding a gold charm bracelet and a young orphaned aerialist.

Nancy Drew visits her cousin in Virginia hoping to locate a missing stained-glass window.