Based on the "Batman Beyond: Return of the Joker" animated film, this tale takes place during the flashback to Bruce and Barbara's final battle with the Joker. Take a glimpse inside our heroes' minds during one of the most jarring events of their superhero careers.

It's December 2008. When a wave of powerful psychomancy rips through Chicago, it's up to Harry Dresden, resident wizard, to find out what's going on in his city. Meanwhile Hellboy, the monster-fighting ex-BPRD agent is pulled out of his seven-year retirement to investigate the same blast.