**The Brown Book of the Reichstag Fire and Hitler Terror** (German: *Braunbuch über Reichstagsbrand und Hitlerterror*) is a book published in Paris, France in August 1933. It was written by an anti-fascist group which included German communist Willi Munzenberg, as well as Hans Siemsen and Gustav Regler. It put forth the theory that Nazis were behind the Reichstag fire of February 27, 1933. According to Spanish novelist Antonio Muñoz Molina it was one of the best selling books of all time. (Source: [Wikipedia](https://en.wikipedia.org/wiki/The_Brown_Book_of_the_Reichstag_Fire_and_Hitler_Terror))