Nancy Drew and her friends get tickets to the opening of a luxury spa, but when someone tampers with the food and commits other acts of sabotage, they begin to look for clues.

Nancy Drew must protect an unstable super fuel-efficient engine, a creation that could possibly end the world's energy crisis, but along the train journey she and her friend George realize that their adversaries will destroy the train if they fail in stealing the engine.

In this graphic novel, Nancy Drew watches a lake disappear into a sinkhole and searches for the heir to jewels found on the sunken yacht that was at the bottom of the lake.

When Hinkley builds a prototype for a new high-efficiency car, he asks Nancy and her mechanic Bess to drive it in a government-sponsored race in which the winner receives a government development contract, but someone is determined to keep Nancy and Bess from winning.

When an ancient artifact and a little boy go missing, Nancy and her friends are on the case. The artifact may prove that the Chinese discovered America prior to Columbus, but someone doesn't want that knowledge public and is out to stop Nancy, permanently.

When the animal shelter where Nancy volunteers mysteriously burns down, Nancy and her friends decide to raise money to rebuild it by organizing a rock concert, but somebody keeps trying to foil their plans.

Nancy, Ned, and George attend the show of a magician named Dan, in which he makes his assistant disappear, and Nancy investigates when the girl fails to reappear.

Nancy and her friends Bess and George investigate a local urban myth about a monster and search for missing student filmmakers.

When Nancy, Bess, and George investigate a missing cat mystery, they run into escaped lions and tigers in the woods and a deadly cat and mouse game ensues.