The Traitor Guard — Aaron Galvin

Betrayal brings awakening.All that Garrett Weaver wanted was to find his way back to shore and return home to his mother. He never asked to swim in the realm beneath the waves, let alone to become a recruit in service to a cause and crown he didn't believe in.Betrayed by his brethren, Garrett finds himself in the same predicament as the Selkies slavers who once kidnapped him . . . and facing the same unimaginable choice - what would you sacrifice to save the one you love most?