Interestingly, in the UK they don't mention his name in any of the adverts.
My guess (so not a spoiler) - all of the people have done evil things and the Devil is coming to get them.
The fact that no critic reviews were allowed suggests that it's a stinker. The only review I saw said this:
If there’s anything less suspenseful in horror this year than watching reaction shots of someone watching a security camera recording I can’t think of what it would be.