"Big Chief of the Red Chapel" is a unique book about the most famous Soviet intelligence officer of World War II. He is known to millions of viewers of the series “Red Chapel” under the name Jean Gilbert (Otto). The real name of this man is Leopold Trepper. The book by Valentin Tomin tells about the heroic and tragic fate of this man, about his comrades and sworn enemies. As an appendix to the book, the unique Memoirs of an intelligence officer, published for the first time not only in Russia but throughout the world, are given, significantly different from his memoirs published abroad. Conversations with Leopold Trepper were recorded by the writer Yuri Korolkov, who worked on a book about the Red Chapel.