An anime which starts off as a comedy, but immediately kills off the comedy part, which leaves you wondering why they even introduced the comedypart at all.
The main thing about this series is the mysterious aura which surrounds the entire plot. But even though it looks like a regular detective, it isn't; it goes much and much deeper, making this series much better than other detective series.
Unfortunately they haven't paid any attention to matching the mouths to the text, and they didn't even made an effort to make the characters move okay: they all move as if the series has been made in the early 80's, which means that when running in a diagonal way, the feet obviously don't even hit the floor which is pretty annoying. As if they didn't want to spend any time on this anime.
The story becomes rather boring and unbelievable after 4-5 episodes, but after episode 10 it becomes interesting again, and you can actually feel the intensity of getting to a climax. Again, unfortunately, the solution to the entire thing is a bit ... crappy.
Even though the series lacks a lot, and hardly makes up for the lacking parts, it still might be interesting enough to watch whenever you have nothing else to do. The detective-part is certainly entertaining, and the episodes 10+ are also pretty good.
Still, it's not good enough to give higher than decent rankings.