The first issue of Black Magick opens with a pagan ritual being done during full moon. A circle member's phone rings, and the ritual is interrupted, and the following panels take place (behind a spoiler because there is some nudity there, but not too much):
I should also note that those two women really are witches.
What does the gesture with the knife mean? Was it meant to be intimidation, or is it some ritualistic thing?
The woman with the knife says
Make sure you ground yourself before you leave.
What is that supposed to mean?