You might recall that back November 2017 IndieWire spoke to Rob about upcoming projects when Rob mentioned that Mia Goth would be working with him again:

Antonio Campos’ “The Devil All the Time”: “It’s got a really fun part in it. I hope it’s going to happen, I think it will. I love Antonio, I’m sort of friends with him as well and I think Mia Goth [“Cure for Wellness,” “Nymphomaniac”] will be in it, and she’s excited about it as well.”

During the current promotion for Suspiria, Mia Goth was interviewed by FrontRowFeatures where she confirmed:

Q: What are you working on now?
Goth: … Then I have a movie called “The Devil All the Time” that’s shooting in February. It’s based on a novel. It’s about a set of characters who live in rural Ohio in the late ‘60s. They don’t know each other very well, but the only thing that links these lives together is the fact that they’re all deeply religious, and it drives them to do fanatical things in the name of their god.

Q: Are you going to have an American accent for that?
Goth: I will. Which I’m terrified about, because American accents are so hard. It’s quite subtle and very specific. I have a lot of work cut out there.

I wonder if she’s playing Helen who has scenes with Rob’s character “Preacher Roy”.  February 2019 – yes please.  That’s twice that date has been confirmed.  This is one of the quirkiest books I’ve read and I loved it.  Interested to see how it translates to film.

Thanks @thebeautyofmia