Heart and Dagger (The Ships in the Night Series)
Holland Rae

When Armand’s brother is kidnapped, he breaks his rule of never engaging with pirates. But desperation drives him to the Liberté and a life he thought he’d left far behind. He’d do anything to save Henri, but Armand never expected to find Charlotte here, and now that’s he’s found her, he doesn’t have a clue what to do about it.
Together, they must face kidnapping, pirate captains, blackmail, and themselves. The Liberté may sail thousands of miles from the shores of England, but that might not be far enough to escape the past.