The Ship Breaker — Odette C. Bell

Amanda and Sebastian are on the trail of another Stargazer, the next clue to the greatest treasure that ever there was. But they have a problem, and his name is Maverick. Hot on their heels, he's turning out to be one of their most dangerous enemies yet.

This time their journey takes them from abandoned country mansions to ship breaking yards, but will it take them home again?