Complex sentence: With the hangman and a local posse on their trail, Madrid meets with his gang who later rob Bierce's stagecoach due to Reece's belief that Bierce holds an invaluable object; the object turns out to be the manuscript for Bierce's new book.
Split into simpler sentences: With the hangman and a local posse on their trail, Madrid meets with his gang who later rob Bierce's stagecoach because of Reece's belief that Bierce holds an invaluable object. The object turns out to be the manuscript for Bierce's new book.