"The Mark of Cain" is an exciting detective story by the popular American writer Carolyn Wells. In this book, you will immerse yourself in the intriguing world of criminal investigations, where the main character, Elinor Fringe, is faced with the difficult task of solving a crime filled with mysteries and secrets. The author skillfully weaves the thread of the plot, revealing the details of the crime step by step, and forces the reader to keep in suspense until the last page. "The Mark of Cain" is a book that will capture the attention of fans of the detective genre and give unforgettable emotions from reading.