Billionaire’s Brother by the Sea by Traci Hall

Special Forces Soldier Mark Livingston died in Syria—or so the world thought. When his billionaire brother, Michael, is believed lost at sea, Mark returns from the dead to find out the truth. On his mission, he meets marina owner, and triplet, Madeleine Kohl, who sees beyond his disguise. As the lovers grow closer to unraveling the mystery behind Michael’s disappearance, Mark and Mad find themselves fighting for their lives as well as their love.

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