Two things fascinate me about Lee Harvey Oswald. In the first place, how did this penniless, friendless, totally unaccomplished loser manage to lead such an eventful, not to say consequential, life? The second thing is how much we know about him: the result of the full power of the media (television, film, and publishing), the state (two separate commissions), and individual obsession (even before the rise of the Internet) being thrown at dissecting one person’s life down to the tiniest detail. Evidence even exists for what buses Oswald took on what trips, and what seats he sat in! You feel a kind of dizzy awe. Though not the last word on the subject (that word will never be written), Posner’s book does provide an excellent overview of what has become a needlessly complex bit of history.