Treason in Eswy — K.V. Johansen

Years have passed since the conclusion of the prequel to this book, Nightwalker. Maurey, fully grown and a leader in his own right, finds himself pulled from his quest across the sea to protect a young princess whose life has been thrown into turmoil following her brother's murder. Princess Eleanor is determined to thwart her mother's misguided efforts to marry her off to her cousin. But even if she succeeds, her father remains a prisoner in Eswy castle, and a mysterious symbol shows up over and over again, pointing to some sort of plot against Eleanor and the kingdom. To achieve freedom, Eleanor and Maurey must work together and Eleanor must find her power.