 Following the trail, Batman finds the doctor who checked out the file murdered and the crime scene arranged to frame him, as well as the incomplete file.After removing the false evidence, Batman follows up with Aaron Black, only to find Black under attack from an imposter dressed as Batman and the Joker.Driving off the imposter and knocking out the Joker, Batman tells Black to run, then follows the imposter, who reveals himself as Black Mask and manages to escape.