The Rover Boys On The Great Lakes; Or, The Secret Of The Island Cave

A vast expanse of inland water holds the key to a startling mystery hidden within a secluded, watery cavern. Exploring the rocky coastlines uncovers a sophisticated smuggling ring operating under the cover of dense maritime fog. Kidnapping and sabotage force three brothers into a desperate nautical chase to rescue a captive and expose the criminal syndicate. Battling treacherous currents and armed thugs, they must navigate the dark waters with absolute precision. The truth is buried deep beneath the waves in this gripping aquatic adventure.