I want an anime that has a lot of murders and mystery. I want it to be a semi-psycho / complete psycho that is a serial killer/murderer. I want it to be a very good, suspenseful anime that has a lot of "Who could it be" scenes or something similar. If possible, I want to see some betrayal etc. If anyone can help me, I would greatly appreciate it.
I've seen: Death Note, Code Geass, Mirai Nikki (Future Diary), Elfen Lied and