Mademoiselle of Monte Carlo (1921) is a thriller by Anglo-French writer William Le Queux. Published at the height of Le Queux’s career as a leading author of popular thrillers, Mademoiselle of Monte Carlo is a story of mystery, murder, and international crime. Using his own research and experience as a journalist and adventurer, Le Queux crafts an accessible, entertaining tale for readers in search of a literary escape. Known for his works of fiction and nonfiction on the possibility of Germany invading Britain—a paranoia common in the early twentieth century—William Le Queux also wrote dozens of thrillers and adventure novels for a dedicated public audience. Although critical acclaim eluded him, popular success made him one of England’s bestselling writers. In Mademoiselle of Monte Carlo, Hugh Henfrey travels to Monte Carlo following the mysterious death of his father. In search of answers, he tracks down Mademoiselle Yvonne Ferad, a legendary gambler who frequents the tables of Europe’s casino capital. Having received a tip that Ferad knows something about his father, Henfrey finds and interrogates her. But at the moment the truth is to be revealed, an assassin appears and guns Ferad down, mortally wounding her. Henfrey is made the primary suspect, forcing him to flee the police by joining a network of criminals under the wing of the Sparrow, a gentleman ringleader and veritable mastermind who conspires to transport the young Englishman out of Monaco. As he moves through the shadows from Italy to Belgium and England, Henfrey begins to suspect that the secret of his father’s death has been right before his eyes the whole time. With a beautifully designed cover and professionally typeset manuscript, this edition of William Le Queux’s Mademoiselle of Monte Carlo is a classic thriller reimagined for modern readers.