The Last Dickens by Matthew Pearl

Set in the late 19th century, this historical mystery novel follows the journey of James Osgood, a Boston publisher, as he embarks on a perilous quest to uncover the truth behind the unfinished manuscript of Charles Dickens' final novel. After the sudden death of Dickens and the mysterious murder of Osgood's clerk, he travels from Boston to London, navigating a web of intrigue and danger. Alongside Rebecca Sand, the clerk's sister, Osgood delves into the shadowy world of publishing, encountering rival publishers, opium dens, and literary secrets, all while racing against time to solve the mystery and secure Dickens' legacy.