"The Millionaire's Secret" is an exciting detective novel by the famous writer Fergus Hume. In this book, readers encounter the mysterious murder of a millionaire named Samuel Longdale. The main character, private detective John Pollock, undertakes to solve this complex case, in which millionaire friends and relatives are under suspicion. Guessing this secret will lead Pollock to incredible criminal intrigues, meetings with famous criminals and dangerous situations. The author successfully combines a dynamic plot with unexpected twists that keep readers on the edge of their seats until the last page of the book. "The Millionaire's Secret" is an exciting thriller that will certainly fascinate lovers of detective stories and leave a long time in the memory of its readers.