Frank and Joe are an accident waiting to happen when they go undercover to expose sabotage . . .
The shorewood Nature Center is a beautiful place - to hike . . . to learn about local ecology . . . or to fall off a cliff. The Hardys learn that the hard way when they go undercover to investigate strange happenings on the grounds. In no time at all, they get jumped, smoked out, and booby-trapped.
The Hardys have never run from a challenge, and they're not about to start now. Someone will do anything to shut the center down. Frank and Joe have a clue why: there's a secret buried somewhere on the center's grounds - a very valuable secret that's worth a lot more than the lives of two young detectives!