Before he began his critically-acclaimed, fan-favorite run on Batman for DC in the fall of 2011, writer Scott Snyder was...writing Batman comics for DC (As has been pointed out many times before, DC Comics didn't look very far for creators to reinvent their comics line as part of "The New 52" effort; in fact, for the most part, they didn't look any farther then the credits of the comics they were already publishing).
The Batman comics Snyder was writing before Batman were issues of Detective Comics (and the miniseries Batman: The Gates of Gotham, which he co-wrote with Kyle Higgins and Ryan Parrott), a series Snyder was on from issue #871 until the September 2011 reboot, at which point he and Batman writer/artist Tony Daniel swapped books. The entirety of his TEC run is collected in the relatively fat trade paperback Batman: The Black Mirror.
Overall, it's a pretty fine example of superior super-comic making, and one of several comics evidencing a Not Broken, Doesn't Need Fixed level of quality being produced on the ever of The New 52.
Snyder was certainly lucky to have such high quality collaborators: The art for all 300 or so pages of the collection is drawn by either Jock or Fancesco Francavilla, two of the better artists to put pencil to paper in order to draw a man dressed like a bat in the last few years. Their styles aren't too terribly compatible, aside from both being good and both being quite dynamic. There's a sketchier, more indistinct and energetic line to Jock's work, which features lots of open scenes and un-filled in spaces. Francavilla's art, meanwhile, has a much more classic comics look, with a touch of Mazzucchelli in the design, which turns out to be so appropriate I imagine it was one of the reasons he got the assignment.
Now, the format of Detective Comics was, at the time, a book with a full-length lead story and a short, back-up feature (although DC called them "co-features," as "back-up" apparently sounded slightly dismissive). At the start, Jock was drawing the lead stories and Francavilla the back-ups, which starred Commissioner Gordon and turned on his personal, family life; specifically, the return of his son James Jr. to Gotham City. The younger James is popularly suspected of being a criminal, and Barbara "Still Oracle" Gordon suspected him of even being a serial killer, although there was never any proof.
The stories are collected chronologically in here, so, other than the change in artists, there's no real sense of what's a lead story and what's a back-up; Snyder, who wrote both features, did a pretty fine job of writing them so they would eventually read as a whole. The shift in art styles, and the shifting tones that accompany those shifts, even work out, as in essence each artist is given a different plot thread to illustrate, and the sub-plot of the Gordon family psychodrama eventually comes to the fore, as Francavilla's art eventually becomes the dominant art in the book.
This is all a very long, complicated way of saying that despite its serial production and publication, The Black Mirror reads like a well-made graphic novel that was meant to be read like a graphic novel.
At the time of these comics' creation, Batman Bruce Wayne was still sort of dead-ish and/or traveling the globe and setting up Batman, Inc, so the title Batman is actually Dick Grayson, working with Alfred out of "the Bat Bunker" in downtown Gotham. Red Robin Tim Drake appears a few times as well, and, Francavilla's failure to make the Red Robin costume look good indicates an inherit flaw in it—it's not a very good costume (the bandolier sinks it, I think), because even Francavilla can't make it look natural sharing panel space with Batman and his costume.
Snyder writes Grayson and the various Gordons so well, I'm kind of sorry to learn that this is it for them as stars, and that Snyder would get the less-faceted, less-relatable Bruce Wayne as his lead when he took over Batman.
I do sort of wish Francavilla and/or Jock had gone from TEC to Batman with Snyder, as they are such a big part of why this book works as well as it does, but I know the latter has been busy on a creator-owned project (The Black Beetle), so perhaps that was his decision as much as it was DC's.
At any rate, this is a pretty damn good Batman comic book.