And just when CSI starts to seem a little too pat, just when the trail of clues seems a little too neat, the show always seems able to throw a surprise or two at us: perhaps there has been no crime after all; perhaps the evidence concerns a completely different crime altogether; or perhaps, as in one brave episode concerning brothers implicated in multiple murders, the evidence simply isn't good enough to convict the right man, even when Grissom knows which one really is guilty. As a result, every episode is simply compulsive viewing. --Mark Walker