The book "Jaakko Ilkka ja Klaus Fleming: A five-act historical play in nine pictures" is written by the author Kasimir Leino. This work reproduces the events of the past, revealing the lives of two outstanding figures - Jaako Ilkka and Klaus Fleming. In each of the nine paintings, the author offers the reader to dive deeper into history, feel the atmosphere of that time and hear the thoughts and emotions of the characters. Under the guidance of the brilliant Casimir Leino, each page of this book reveals new facts and unique moments of the lives of Jaako Ilkka and Klaus Fleming, allowing the reader to better understand their actions in the past and the fate of these outstanding people.