"Frank and Joe Hardy don't believe in ghosts--until they see one hovering over a mansion built more than 100 years ago by an evil smuggler, Captain Blackwing. It's up to them to figure out what the eerie specter could be.
Following a clue, the Hardy Boys tie the haunting to a recent rash of high-tech thefts and an international espionage ring. With a hidden fortune--and their lives--at stake, Frank and Joe are up against a gang of ruthless and very clever criminals, all striving to piece together The Blackwing Puzzle."
Following a clue, the Hardy Boys tie the haunting to a recent rash of high-tech thefts and an international espionage ring. With a hidden fortune--and their lives--at stake, Frank and Joe are up against a gang of ruthless and very clever criminals, all striving to piece together The Blackwing Puzzle."
