Third things third (because...well, you get the point), let's talk story. So basics...there's The Blood Guard charged with protecting the Pures and the Bend Sinister trying to take them all out for their own nefarious reasons. Bloodshed is not a problem (and there is some shed), loss of life is to be expected (unless you're one of the few that can't die), and evil is around every corner (Legion...it's a creepy effect used for maximum results!)...but so is good and they come in all shapes, sizes, and personalities (Diz! Love her!). It's a motley crew set to save the day and with their will, whit, and determination, there's nothing they can't do. Even falling off a bridge without a tether! Even pull a Pure back from utter demise (sort of)! Even...okay, I'm not going to spoil everything for you, but rest assured the adventure within is going to be rough, tumble, and full of surprises (including a possessed cat!).
Last things last...I gotta go with my gut instincts here, but no matter what anyone tells you, READ THIS FROM THE START. It's not THAT big a series (three books, possibly in completion...or at least it seems that way at this time) and to get the FULL experience, it's really a tad necessary, at least from my vantage point. All in all though, despite those things I felt I was missing here and there, the story did still manage to keep my attention. It was great seeing young heroes taking charge of their destinies without uber-fascinating super powers and what not. It just goes to show you that you can do anything you put your mind to (including project things...inside joke) and to never underestimate the little guy.