Sailing in the Caribbean, Captain Alan Lewrie, RN, is once again pursuing a chimera. A rich French prize ship he'd left at anchor at Dominica has gone missing, along with six of his sailors. What starts as a straightforward search for it, and them, from Hispaniola to Barbados, far down the Antilles, leads Lewrie to a gruesome discovery on the Dry Tortugas and to a vile cabal of the most pitiles...