Detective Conan 342:
It's kind of awkward to put an anime original story here, right in the midst of all the big plot developments of the surrounding episodes. It feels like this would have fit much better if they held off on it until after the arc was resolved.
Judged just on its own merits, it's okay, I guess. For an hour special, it's kind of a waste. The stakes are so low, and pretty much every twist is really obvious. There are some good comedy scenes with Sonoko, but when the stakes of an episode mostly involve tracking down a stolen item, I don't think it needed 46 minutes. The unique setting and the fact that it's just about competent at everything it does keeps it watchable, but it doesn't really go far beyond that.