If you missed out on the DARK NIGHTS prelude, DARK DAYS, here’s your opportunity to start from the beginning. This one has the signature metal foil cover on a hardcover. Can’t remember ever seeing that yet. I also like how it goes back in publishing history and grabs some issues that lay foundational hints, even if they maybe are retroactive continuity (retcon) hints.
“Batman is hiding a dark secret that could threaten the very existence of the multiverse. Leading directly into the blockbuster event DARK NIGHTS: METAL, this is an epic story that spans generations, featuring DARK DAYS: THE FORGE and DARK DAYS: THE CASTING, as well as classic DC stories that built the foundations of Metal, including FINAL CRISIS #6-7, THE RETURN OF BRUCE WAYNE #1, plus (from the New 52 era) BATMAN #38-39, NIGHTWING #17 (current series) and more.”