Since first learning about this Sherlock special, it has been teased as a standalone story that existed outside of the series' mythology. After the first half of the episode, I was content to view the story as a fun alternate story to the main timeline, even if it was not wholly satisfying. Surprisingly, the fact that this story does tie into the main narrative feels like the wrong choice as it doesn't work as anything more than a tease until the 2017 premiere of the next trio of mysteries. Compared to the rest of Sherlock to date, this hour was fun but ultimately a placeholder for better stories yet to come. I enjoyed this hour and a half for what it was, but it could have been so much more.