I have to be upfront, that mystery isn't really my thing and I'm very particular on the mystery genre. This opening episode is okay. It somewhat establish what is expected from the series, but so much unanswered questions that we basically don't know anything about Moriarty except his fullname and that he's smart, no other characteristic yet. The pacing is okay, especially for a one-off episode. The animation is okay, standard Production I.G. I'm hoping for more in the next episode.