Puppets of the Devil

"YOU ARE ALL PUPPETS! GIVE IN WHOEVER ACTS SURVIVES!"

It was the howling bellow of a creature never before seen by the officers of the man of God. In all the scriptures he's read, all the one's he's seen outside of the known versions of the holy book there was a monster like this, but he's only read vague descriptions.

Its size was not unlike that of the Leviathan. But he could describe its existence. An evil spirit that enters the body, clinging to the soul and causing the body and mind great illness. A demon that transmuted the soul. Hysteric, schizophrenic dissociations that led to violent outbursts. But he's never heard of it changing the body. Was this why the act of removing the creature was called 'restoration'?