The first 35 minutes of this episode are so so. As the episode goes, it improves until about the 36-37 minute mark where things begin to really look up in terms of quality. This all builds to a marvelous, brilliant, and tear-jerking finale. Hearing music from Silence in the Library, the doctor gifting River the screwdriver from the aforementioned episode, and the implied sentiments at the conclusion, create an amazing end to what would have otherwise been a mediocre episode. It leaves me wishing that the rest of the episode had been as brilliant..... If it had, it would have been one for the ages. The episode was well scored, filmed, and the dialog was, for the most part, great. All in all, one of the better Christmas specials.