Halo has, unfortunately, telegraphed its final moments with very little room for surprises. Predictability is far from a cardinal sin, especially in an adaptation of an iconic franchise, but it does rob some elements of impact. Halo pushed a central conflict between John-117 and his Master Chief persona for most of the season. "Onyx" features the first of several likely payoffs, but its weakness will spell disaster for the rest of the series.