This novel is the aquatic adventure of a lifetime.Four siblings, Francis, Mavis, Bernard, and Kathleen set out to rescue the sister of a mermaid who is being held captive at a circus.But who is good and who turns out evil? As always, appearances may deceive, and all is not as it seems.Meeting many new friends and gaining access to a secret kingdom underneath the sea, the siblings find themselves caught up in a war to save their new friends - the merpeople. Now, the siblings must confront their loyalty to each other as they fight for the goodness of the world. A timeless book, perfect for fans of C.S. Lewis, Bethany C. Morrow and J.K. Rowling, or anyone looking for a little bit of magic in their lives.-