Principia Dischordia and the Scent of the Locust

Amongst the parade of souls waiting for entry into the heavenly host is a Goth girl, an emo suicide: lost, blackened by humanity's excesses and despairing of God. As she suicided, St. Peter can't grant her entry into heaven. Unless... in the rush of souls on Judgement Day, one entered heaven that shouldn't be there. One vile soul snuck in and is loose amongst the innocents, intent to devour them.