"I'm Back" is a novel in the genre of science fiction literature by the famous writer Robert Heinlein. This book tells the story of astronaut Joan Smith, who returns to Earth after an experimental space flight. However, he must face complex moral and ethical questions, unravel the mysterious circumstances of his stunning return, and wrestle with his own self-identity. The book "I'm back" impresses with the depth of philosophical considerations, unexpected plot twists and the exciting atmosphere of a cosmic mystery. Go with the hero on an exciting journey into the unexplored depths of space and the human soul.