Darker Than Black is one of the best anime I have ever seen, and it doesn't hurt that with the exception of one or two episodes at least one person dies per episode. Usually by the protagonist's hands. Oh and (SPOILER ALERT!)
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By the way, the anime and manga are very different, and having experienced both I can say that the anime is the better of the two.
I also liked
Kaze no Stigma, and while some moments were a little trying, I was generally sad when I realized I had watched the last episode.
By the way, if anyone knows where to find the manga I humbly beseech you send the link my way.
Hope that helps you somewhat Lord Raine, and anyone else looking for good anime.