The Hellblazer, Volume 1: The Poison Truth

"John Constantine is back in London, reuniting with old friends--and older enemies: There's Chas Chandler, his best mate; Mercury, the young psychic, the Earth elemental known as the Swamp Thing; and, of course, more demons and djinns than you can cast a curse at. If he's going to survive this hell-raising homecoming, Constantine will have to play fast and loose with the rules--and with the souls of everyone residing in the Old Smoke. Evil is a surprisingly common infection, but sometimes the cure is worse than the disease"--