In the modern age a persona is indistinguishable from a person. They magnify what is within us, and what we bring out within others. It is a shared delusion powerful enough to claim a life of its own.
Robotic Poet or Paperweight
The tragic fate of the legendary beauty has left traces behind until this day.
The party is walking through the forest at night when they come upon a clearing. Half a dozen black-robed corpses lie scattered across the ground, and a pentagram of blood is shoddily drawn in the dirt.
It seems these people summoned something they could not control. Whether or not the demon returns is up to the GM, but it would be just as rich if the demon never returned, and for the rest of the night, every stray sound or odd shadow will be jumped at!