The Star-Tide Oath

A bone-carved map has made Captain Mara Vayne the most hunted sailor on the Luminous Sea—and dredged up a childhood vow she never meant to keep. With a vengeful fleet closing in and her crew's loyalty fracturing under pressure, Mara must navigate treacherous alliances, celestial tides that obey no chart, and a debt older than her ship's hull. The price of failure isn't death. It's losing everyone she chose to call her own.