`Darker than Black' is a series set in a world where superpowered individuals known as Contractors work as mercenaries for a variety of governments, criminals and secret agencies. The series follows one such Contractor known as Hei, the Black Reaper (or the Black Shinigami if you prefer) and his team as they perform missions for the mysterious Syndicate.
I did greatly enjoy watching this series but I would say that it doesn't really get going until the second half of the season when the Evening Primrose organisation comes into the story. Before this the season had a somewhat episodic feel to it with each two episode story being relatively self contained and, while entertaining, I felt it the series wasn't really as good as it could be. After Evening Primrose comes into the story though things definitely begin t get better as while the series is still a bit episodic the plot is increasingly tied together and some of the things that happen in the first half of the series take on some new meaning.
The series has some nice animation and a good plot to go along with it (once it gets going). The English dub of the series is also very good. Overall I would have to say that after watching this series, it has jumped into my top ten anime series that I have seen.