Treasure hunters

"Following clues left by their missing father, twelve-year-old twins Bickford and Rebecca Kidd sail from the Caribbean to New York City with their siblings to finish the dangerous quest of their world-famous treasure-hunting parents"--Provided by publisher.

Following clues left by their missing father, the four Kidd siblings sail from the Caribbean to New York City to finish the dangerous quest of their treasure-hunting parents. The coauthors are Chris Grabenstein and Mark Shulman. Book #1