“Boy's Allies Under Water; or, The Disappearance of Submarines" is an exciting adventure novel from the famous writer Claire W. Hayes. The action unfolds in the era of the First World War, when two boy friends fall into dangerous adventures at sea. They encounter mysterious disappearances of submarines and decide to solve this mystery on their own. Exciting events, unexpected plot twists and loyalty to friendship make this book an exciting and interesting read for the whole family.