Gr 2-4-Suspenseful chapter endings propel readers forward in this fast-paced series entry. Best friends Dink, Josh, and Ruth Rose visit the latter's grandmother in Key West, FL, during winter vacation. Gram Hathaway and some other senior citizens are getting ready to invest large amounts of money in a shipwreck-salvaging project. It doesn't take long for the youngsters to figure out that something is fishy. The young detectives sneak aboard their suspects' cruiser and find themselves in danger. Saved by the coast guard, they are able to provide incriminating information to the authorities. Despite some incredible coincidences, the novel gives realistic details about salvaging shipwrecks. Dividing her time between in-line skating and baking cookies, Gram stays just this side of believable. Black-and-white illustrations appear throughout, depicting the book's setting. A frothy but fun read.-Gay Lynn Van Vleck, Henrico County Library, Glen Allen, VA Copyright 1999 Cahners Business Information.