I must admit the mystery side of this series takes a long time. Its episode 14 and we are still uncertain what is going on. In the previous series we knew what the problem was my episode 11 and from then on its was all about solving it. This is possibly one reason why this season is not considered as good as the first, its wanders around too much before getting to the key problem and then going around to solve it. We also start down paths to have them cut off, such as the research laboratory. We found it, got a clue and then the series just drops it with a single sentence saying we never found out what the lab was for.
The one bright spark is my not we are getting involved with the character of maho. Its not a strong involvement, but the very vague Mozart and Saieri theme and the lack of any interaction with Okabe does not help, but nonetheless we are rooting for her when she finally decided to pull her finger out and help. Better than the last episode, but not great.