Why is Biff Brewster's father so eager to leave for Hawaii? Is there more than just a mining engineers' conference afoot? The elder Brewster is strangely silent, and Biff can only guess at the cause of his father's sudden anxiety.
In this third exciting mystery adventure of the Biff Brewster series, the entire Brewster family flies to festive, exotic Honolulu where a startling newspaper headline involves Biff and his father in a hair-raising race to locate a kidnapped scientist, a sunken sloop, and a chache of precious Cesium, a rare mineral essential to rocket propulsion and the conquest of the moon.
With the help of his new friend, Likake Mahenili, Biff soon learns that more than sharpened wits are necessary to defeat the mysterious forces working against them. The cunning of a ruthless rival engineer and the violence of the reef-filled waters off the islands combine to challenge the courage and stamina of the boys. Likake, an expert swimmer and diver, teaches Biff the skills he will need to protect himself against the defiant winds and tides which already have claimed the life of one colleague.
A vitally important scientific project and a life are at stake as Biff Brewster and his father crash headlong into the danger and breath-taking suspense of their adventure in Hawaii.