When a gang that uses parties as a cover for robberies victimizes a masquerade party Nancy is attending, the teen-age detective switches identity with her girl friend to solve the case.

While solving the mystery of an old man's disappearing fortune, Nancy ends a family feud and reveals the identity of an orphan of unknown parentage.

Nancy Drew must use clues in a dead man's letters to find some unpublished musical manuscripts that will save an old man and his granddaughter from financial ruin.

Nancy Drew's latest involvement in a mystery begins in her home town and concerns a synthetic sapphire with a spider embedded in it, and the strange disappearance of Ned Nickerson.

Mr. Drew is on the trail of an international ring of jewel thieves and asks Nancy to assist him. The trail leads to a summer resort area. Before Nancy has a chance to start work on her fathers case, a golf caddy tells her a frightening tale--in the dense woods nearby is an old wooden footbridge guarded by a ghost! Intrigued by the caddys story, Nancy decides to investigate. Several riddles confront the young detective as she attempts to solve the...