• 0
• 0
• 0

Summary

Packed with suspense, action, and clever sleuthing, The Secret of the Caves is a classic Hardy Boys adventure perfect for young detectives and mystery lovers alike. 
 
When the Hardy boys set out to investigate the strange disappearance of a college professor, the trail leads them to Honeycomb Caves—a labyrinth of danger and intrigue hidden along the coast. As Frank and Joe dig deeper, they uncover a web of mystery involving secret radio signals, suspicious strangers, and a threat that could shake national security.

Duration: about 4 hours (04:06:24)
Publishing date: 2025-07-08; Unabridged; Copyright Year: 2025. Copyright Statment: —

• Young Readers