Nocte - Nocturnal Souls, #1

A loyal soldier irrevocably bound to a cruel master, Caspian lives by one creed: obey, hunt, kill. Until her.  Innocent and naively hopeful, Niamh is the perfect pawn - and the ideal subject in his most twisted game yet. She is also a willing victim - for if it means achieving her most cherished dream of seeing the world, she is willing to do just about anything. Even sacrifice herself to a monster.  As their mutual interest in each other becomes a burning obsession, Caspian and Niamh are forced to grapple with who the monster in this terrifying game truly is.  And whether he'll ever be willing to let her go.