We just need to see that the demons get no rest in solid form.
A demon can get into real trouble, doing the right thing.
A demon gets into a person and makes him sick.
How this demon gets there is not very hard to understand once you've inspected one, close up.
Few knew how to develop new sources, and the demons got to those who did.
Just that a witch and demons would get along real fine.
It must be that demons have gotten to you somehow.
I did too, but the demons were getting to me.
It wasn't a smooth trip, but in due course the demon got there.
"It must be that a demon has got into you."