Elongated Man's wife is murdered and the search for her killer opens up a whole can of worms involving super-villains having their memories erased.
The best comics are the ones that are about something. Starman is about stepping into your father's shoes. Sandman is about stories. The Watchmen is about how power corrupts. This one is a mystery that raises a lot of ethical questions. Meltzer's writing is really good and Rags Morales's art is the perfect fit. Having Green Arrow being one of the main characters gives the reader a good view of things.
If you're looking for a super hero comic that's more than just two guys in costumes punching each other, pick this up.