A horrific tragedy in the United Kingdom sends a very personal and deadly message to the Dark Knight—one that will draw Batman out of Gotham City to investigate! From the moment he lands in Europe, Batman will face a difficult investigation and unheard-of adversaries and gain the assistance of a partner once more—all in the hunt for the villain known as Equilibrium! New villains! New allies! A thrilling overseas adventure begins for the Dark Knight! Collects Batman: The Detective #1-6.