Hellblazer #280
an issue of Hellblazer by DC / Vertigo
Issue description
When John Constantine gets a call from his niece Gemma telling him she's summoned a demon, he hurries to her aid. But Gemma is nursing a grudge against her uncle, believing him responsible for an assault. The truth is, Gemma Masters has always felt like a Constantine - and now she plans to kill off that Constantine part of her for good.