In England to discover the secret of the Silver Knight in Bromley Hall, Carson Drew and his daughter Nancy encounter Frank and Joe Hardy in their hotel and the four proceed to unravel the mystery. The reader's choices determine the direction of the investigation.

In Austria to watch a mutual friend participate in an ice skating competition, the Hardy brothers and Nancy Drew find themselves involved in a dangerous international adventure when their friend is kidnapped after winning a gold medal. The reader's choices determine the outcome of the plot.A world-champion ice skater is kidnapped in Austria and Nancy, Frank, and Joe, along with the reader, must solve the mystery

The reader has a number of choices in directing the plot as Nancy Drew and Joe and Frank Hardy unravel a mystery involving smuggled artifacts from Mexico.

Nancy Drew and the Hardy brothers run into danger when they try to prevent the sabotage of an anti-pollution campaign. The reader controls the outcome of the story by choosing different ways of advancing the plot.

A self-directing adventure starring Nancy Drew and the Hardy brothers, who are investigating the disappearance of a briefcase full of money.

This book, though assigned an ISBN, was cancelled before publication.

This book, though assigned an ISBN, was cancelled before publication.