To whom does one’s true allegiance lie?

The seventeenth novel in the sweeping Aubrey-Maturin series of naval tales, which the New York Times Book Review has described as "the best historical novels ever written." Having survived a long and desperate adventure in the Great South Sea, Captain Jack Aubrey and Stephen Maturin return to England to very different circumstances. For Jack it is a happy homecoming, at least initially, but for Stephen it is disastrous: his little daughter appears to be autistic, incapable of speech or contact, while his wife, Diana, unable to bear this situation, has disappeared, her house being looked after by the widowed Clarissa Oakes. Much of The Commodore takes place on land, in sitting rooms and in drafty castles, but the roar of the great guns is never far from our hearing. Aubrey and Maturin are sent on a bizarre decoy mission to the fever-ridden lagoons of the Gulf of Guinea to suppress the slave trade. But their ultimate destination is Ireland, where the French are mounting an invasion that will test Aubrey's seamanship and Maturin's resourcefulness as a secret intelligence agent. The subtle interweaving of these disparate themes is an achievement of pure storytelling by one of our greatest living novelists.

At the outset of an adventure filled with disaster and delight, Jack Aubrey and Stephen Maturin pursue a prize through the stormy seas and icebergs south of Cape Horn, where the hunters suddenly become the hunted.

"[The series shows] a joy in language that jumps from every page....You're in for a wonderful voyage."—Cutler Durkee, People Shipwrecked on a remote island in the Dutch East Indies, Captain Aubrey, surgeon and secret intelligence agent Stephen Maturin, and the crew of the Diane fashion a schooner from the wreck. A vicious attack by Malay pirates is repulsed, but the makeshift vessel burns, and they are truly marooned. Their escape from this predicament is one that only the whimsy and ingenuity of Patrick O'Brian—or Stephen Maturin—could devise. In command now of a new ship, the Nutmeg, Aubrey pursues his interrupted mission. The dreadful penal colony in New South Wales, harrowingly described, is the backdrop to a diplomatic crisis provoked by Maturin's Irish temper, and to a near-fatal encounter with the wildlife of the Australian outback.

"Jack's assignment: to capture the Indian Ocean islands of Réunion and Mauritius from the French. That campaign forms the narrative thread of this rollicking sea saga. But its substance is more beguiling still." —Elizabeth Peer, Newsweek Captain Jack Aubrey is ashore on half pay without a command—until Stephen Maturin arrives with secret orders for Aubrey to take a frigate to the Cape of Good Hope under a commodore's pennant, there to mount an expedition against the French-held islands of Mauritius and La Réunion. But the difficulties of carrying out his orders are compounded by two of his own captains—Lord Clonfert, a pleasure-seeking dilettante, and Captain Corbett, whose severity pushes his crew to the verge of mutiny.

Napoleon has escaped from Elba – the Hundred Days have begun.

"The old master has us again in the palm of his hand." —Los Angeles Times Napoleon has been defeated at Waterloo, and the ensuing peace brings with it both the desertion of nearly half of Captain Aubrey's crew and the sudden dimming of Aubrey's career prospects in a peacetime navy. When the Surprise is nearly sunk on her way to South America—where Aubrey and Stephen Maturin are to help Chile assert her independence from Spain—the delay occasioned by repairs reaps a harvest of strange consequences. The South American expedition is a desperate affair; and in the end Jack's bold initiative to strike at the vastly superior Spanish fleet precipitates a spectacular naval action that will determine both Chile's fate and his own.