The Rover Boys on the Great Lakes; Or, The Secret of the Island Cave #966032

Vast, storm-tossed freshwater seas provide the backdrop for a deeply mysterious voyage. A hidden cavern holds the key to a perilous secret, but navigating the treacherous lake waters is a deadly challenge. The brothers find themselves racing against desperate criminals who are hunting for the exact same subterranean prize. Capsizing waves and hidden reefs pale in comparison to the human malice awaiting them in the dark. Plunge into a nautical mystery brimming with fierce storms and startling revelations.