"The Letter of Marque" is a novel by Patrick O'Brian that continues the adventures of Captain Jack Aubrey and his friend Dr. Stephen Maturin during the Napoleonic Wars. As the story unfolds, Aubrey finds himself in a precarious situation after being wrongfully accused of a crime and stripped of his command. To reclaim his status and honor, he must navigate the treacherous waters of naval politics and seek a privateer's letter of marque, which...