Sidney Reilly still remains a man of mystery. His whole life is surrounded by myths, some of which he invented himself. Sometimes he is called the “man from nowhere” - even today it is still one hundred percent unknown where he was born. He could be considered the “standard enemy” of the Soviet regime, but his life was not limited only to espionage and political conspiracies: he pulled off adventurous commercial combinations, earned a lot of money and quickly spent it on new adventures, collected one of the largest and most unique collections of objects in the world, associated with Napoleon, passionately loved aviation... In his new book, E.V. Matonin will finally answer the question that has been troubling historians for a hundred years: “Who are you, Mr. Reilly?” The book is intended for a wide range of readers interested in the history of Russia the beginning of the 20th century, as well as the history of intelligence and espionage.