A secret submarine, making new friends, a deep mountain lake, and a menacing sea monster. Book 6 in the award-winning, wholesome Wright Cousin Adventures series by Gregory O. Smith!

"The submarine was now deep down inside the watery canyon and picking up speed. Out of the corner of his eye, Tim saw something dark and sinister sweep by." Clear the bridge! Up periscope! The five Wright cousins have a submarine and they know how to use it! But the deeper they dive in the waters of Lake Pinecone, the more mysterious the lake becomes. It contains many hidden and unexpected secrets! To top it off, something spooky is wrecking boats on the lake and it's downright scary. Can the Wright cousins find out what the threat is before they and their submarine become its next victim?

"Young readers with a sense of adventure...will appreciate the Wright Cousins and the many stories they have to share. This is a charming addition to libraries for middle grade readers." - Riverdancer "Vine Review"

This wholesome, action-packed series is filled with exciting STEM accurate technology and family friendly humor. Books 6-9 are designed to be read in order. Dive into the The Great Submarine Adventure today!