Carson Drew is seeking a clever ring of jewel thieves and asks his daughter to assist him.
The trail leads to a luxurious summer resort area where the Drews, Bess and George are vacationing.
Before Nancy has a chance to start work on her father’s case, a golf caddy tells her a frightening tale.
In the nearby dense woods, an old wooden footbridge is guarded by a ghost!
Intrigued by the caddy’s story, Nancy decides to investigate.
Several riddles confront the young detective in her attempts to solve the mystery of the haunted bridge and track down a woman suspected of being a key member of the gang of jewel thieves.