“Seance” Review: You Can’t Sit With Us, But Let’s Seance

Suki Waterhouse takes the lead in Simon Barrett’s surprising and subversive slasher-whodunit disguised as a supernatural horror movie.

Image: RLJE Films

The first sign that Seance has intentions of being more than a run-of-the-mill horror movie comes early, in the cold open, when a group of girls…