The book includes two adventure and fantasy novels by the famous writer. The first one is about the American Civil War. Along with the battle scenes, many mysterious events take place in the novel... The second novel, “Flag of the Motherland,” tells the story of the fate of Tom Rock, the inventor of a destructive weapon of enormous power. The desire to profit from his invention drives Rock to madness, and his “fulgurator” becomes the property of international pirates. Based on this novel, the famous film by Karl Zeman “The Mystery of Back Cap Island” was made.