A fire might save him, but he dared not risk attracting the invisible demon that had slaughtered the camp.

Now and again one sprang to his feet with a scream, arms windmilling as he fought invisible demons.

A horde of invisible demons had seemingly responded to their master.

This evening I will perform certain mystical operations to banish the invisible demons which are plaguing you.

Adrian's whisper echoed as though a thousand invisible demons had taken it up, mocking him.

It was as if an invisible demon followed him, straining inside of her skin to close the distance.

Miss Santana was surely contending with invisible private demons.

But just because you're paranoid doesn't mean that there isn't an invisible demon about to eat your face.

The worshipers of other gods had to wander the earth as invisible demons, miserable and destructive.

Slowly, and with infinite cruelty, the invisible demon tore the wizard apart.