The third installment of this Edgar Award-mominated series (for Wreck at Ada's Reef) is another engrossing two-pronged adventure--an island mystery and the long-simmering control over Swallowtail Island. Following the Swallowtales writers' conference, there are two visitors to the island. Chase Kannen, a dashing, 30ish explorer/adventurer arrives on a huge expedition yacht in search of a bronze statue of Cassandra (of Greek mythology)...