The third book in Arthur Ransome's wonderful series for children, Peter Duck takes intrepid explorers John, Susan, Titty, and Roger Walker, and fearsome Amazon pirates Nancy and Peggy Blackett, onto the high seas. Under the command of the infamous Captain Flint (Nancy and Peggy's Uncle Jim), the children brave a real-life pirate and his cutthroat crew, fog, sharks, and the ravenous crabs of Crab Island in the search for buried treasure.
Thomas Kydd, a hero of Trafalgar, holds the glory of being Post-Captain of the 32-gun frigate, L'Aurore. A Caribbean posting seems a welcome respite for the war hero, but when more and more merchantmen begin vanishing from the sea, fear starts to spread. Kydd must embark on a dangerous game of espionage in order to destroy this new and terrible danger to the Empire.
"Thomas in another mystery"