The Lucky One - Brethren of the Coast, #6

When a band of thieves steals a priceless family heirloom from Nautionnier Knight Dalton Randolph's ship, he vows to recover the treasured artifact and bring the criminals to justice. But the local governor is missing in action, and the governor's daughter, Daphne Harcourt, is anything but cooperative, which presents a most irresistible challenge for the happy-go-lucky rake. Miss Daphne Harcourt has spent her entire life on Portsea Island.
When desperate circumstances force her to take drastic measures, she is discovered in a compromising position by a handsome stranger. To the undiscerning eye, Dalton Randolph could be the answer to her prayers, and an ancient brooch with mystical powers predicts just that. But is the charming sea captain her salvation or her downfall?