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.

When Nancy shows up at a charity ball wearing the same dress as her rival Deirdre, Deirdre is furious, but the girl detective soon has more to worry about when she is kidnapped and must depend on Bess, George, and Ned to rescue her.

Nancy Drew and Ned Nickerson, having traveled to Nevershare to return a lost dog, start to investigate when they realize the town's citizens have disappeared. Presented in graphic novel form.

Nancy Drew is chosen to drive in a race between cars with experimental, fuel-efficient engines, the winner of which will win a governmnent contract, and although her team has kept a sharp eye out for saboteurs, Nancy's suspicions that something is not quite right, prove once again to be true.

Nancy, receiving a call from a girl she befriended in a communication to India, travels to India and almost becomes the girl who wasn't there.