In the Batman story arc "", that started in "Detective Comics" #817, and was part of DC's "One Year Later" storyline, it is revealed that, at Batman's request and with his training, Harvey Dent becomes a vigilante protector of Gotham City in most of Batman's absence of nearly a year. He is reluctant to take the job, but Batman assures him that it will serve as atonement for his past crimes. After a month of training, they fight the Firebug and Mr. Freeze, before Batman leaves for a year. Dent enjoys his new role, but his methods are more extreme and less refined than Batman's. Upon Batman's return, Dent begins to feel unnecessary and unappreciated, which prompts the return of the "Two-Face" persona (seen and heard by Dent through hallucinations). In "Face the Face", his frustration is compounded by a series of mysterious murders that seem to have been committed by Two-Face; the villains KGBeast, Magpie, Ventriloquist and Scarface, and Orca are all shot twice in the head with a double-barreled pistol. When Batman confronts Dent about these deaths, asking him to confirm that he was not responsible, Dent refuses to give a definite answer. He then detonates a bomb in his apartment and leaves Batman dazed as he flees.