[Crani]

Mnemosyne is about an agency and the cases they solve, now, this aren't ordinary cases, they have all to do with supernatural, and Rin Asōgi, as super power that make her recover magically and this let's her take on this cases, so I advice you to watch this one, as soon as possible, because it's really good.
Yah, I heard about the 3rd season. And as for the Higurashi goes at first it was really confusing, like when it came to the end of the first arc and it jumped to the second arc, I was like: WTF? What happened here, the last image I had was the chick smashing the dude's school with a bat and know it's all good and happy and nothing was explain, but after that when it reached to the third arc I got the catch and started to understand it better, and besides this the series is great but a bit "heavy" so it's hard to see more than 3 or 4 eps. a day of it.
And I believe Kite Liberator, can also be considered thriller.