The seventeenth novel in the best-selling 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 old master has us again in the palm of his hand."—Los Angeles Times (a Best Book of 1999) 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.

"One of the best novelists since Jane Austen....The Hundred Days may be the best installment yet....I give O'Brian's fans joy of it."—Philadelphia Inquirer Napoleon, escaped from Elba, pursues his enemies across Europe like a vengeful phoenix. If he can corner the British and Prussians before their Russian and Austrian allies arrive, his genius will lead the French armies to triumph at Waterloo. In the Balkans, preparing a thrust northwards into Central Europe to block the Russians and Austrians, a horde of Muslim mercenaries is gathering. They are inclined toward Napoleon because of his conversion to Islam during the Egyptian campaign, but they will not move without a shipment of gold ingots from Sheik Ibn Hazm which, according to British intelligence, is on its way via camel caravan to the coast of North Africa. It is this gold that Jack Aubrey and Stephen Maturin must at all costs intercept. The fate of Europe hinges on their desperate mission. "The Hundred Days is certain to delight O'Brian's fans, for whom happiness is an unending stream of Aubrey/Maturin books....[It] is a fine novel that stands proudly on the shelf with the others."—Los Angeles Times

"[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.

Stephen Maturin brings Captain Jack Aubrey secret orders to lead an expedition against the French islands of Mauritius and La Reunion, but the conduct of two of his own officers threatens the success of the mission.

With factions on board, and multiple enemies to contend with, only the most careful navigation will save them.