All Eyes on First Prize

Bayport Elementary School is holding a science fair, and first prize is a gift certificate to a cool store called The Nature Place. The Hardys have projects only detectives could dream up—a fingerprint collection and a special spy-scope. Chet’s working on a hot dog cooker powered by the sun, and Mike Mendez is putting a camera in one of his robots to make it a burglar detector.

But when two of th...