1691 . . . Nick Pearson swings back into action with the crew of the Tetrarch on an adventure to find treasure on an island in the Caribbean. But the treasure takes more forms than just silver and gold, for Nick's old sweetheart Sarah has recovered from her long illness and has set off to find him. Meanwhile other treasure hunters are in hot pursuit. Fuming with anger after being outfoxed by the pirates and losing his treasure to them, Don...