Complex sentence: The next morning Bob is ejected from town, but Beauchamp decides to stay and write about Bill, who has impressed him with his tales of old gunfights and seeming knowledge of the inner workings of a gunfighter's psyche.
Split into simpler sentences: The next morning he ejects Bob from town, but Beauchamp decides to stay and write about Bill. He has impressed the biographer with his tales of old gunfights and seeming knowledge of the inner workings of a gunfighter's psyche.