Complex sentence: Pinkerton himself began to doubt the bravado of his prime suspect, or at least so he says long after the fact, but Cipriano himself leaves us with some clues (if the "Congressional Record" can be trusted).
Split into simpler sentences: Pinkerton himself began to doubt the bravado of his prime suspect, or at least so he says long after the fact. But Cipriano himself leaves us with some clues (if the "Congressional Record" can be trusted).