For Tristan Hart, everything changes with one crashing wave. 
He was gone for three days. Sucked out to sea in a tidal wave and spit back ashore at Coney Island with no memory of what happened. Now his dreams are haunted by a terrifying silver mermaid with razor-sharp teeth. 
His best friend Layla is convinced something is wrong. But how can he explain he can sense emotion like never before? How can he explain he's heir to a kingdom he never knew existed? That he's suddenly a pawn in a battle as ancient as the gods. 
Something happened to him in those three days. He was claimed by the sea...and now it wants him back.