6 — The Great Submarine Adventure

The submarine was now down inside the watery canyon and picking up speed. Out of the corner of his eye, Tim saw something dark and sinister sweep by…

The five Wright cousins have a submarine and they know how to use it! But the deeper they go, the more mysterious Lake Pinecone becomes. Something is wrecking boats on the lake and it’s downright scary. Will they find the secret before it’s too late? It’s “up periscope” and “man the torpedoes” as the fun-loving Wright cousins dive into this fun new adventure—The Great Submarine Adventure!