Written by Steve Weiner (The Will Eisner Companion) and Jason Hall (Beware the Creeper, Trigger, Detective Comics) and densely illustrated with classic images from the comics as well as a handful of new drawings from Mignola, this volume offers thorough documentation of the Hellboy universe, compiling the many complex pieces that make up the life of the World's Greatest Paranormal Investigator into an easily understandable format.