Re: Black Magic
I agree with Zeshu whole-heartedly. Personally, I am very close to people who thought and think that they are under the spell of magic. I found one common character trait in all of them: their inability to accept the responsibility of their own wrong-doings. I have used the word "inability" here for a reason. "Inability" is, many times, something which you cannot control. This inability comes from their upbringing where their elders have manifested the same behaviour so strongly, that this becomes a belief to them, capable of halucinating themselves.
I have so many examples if anyone is interested.