Starring David Caruso (with one of the best line deliveries of all time), Peter Mullan, Josh Lucas, Stephen Gevedon, and Brendan Sexton III, Session 9 is a claustrophobic slow-burn nightmare that uses sound, space, texture, and classic horror techniques to keep the tension high and attention rapt. It’s the kind of economical, atmosphere-first filmmaking that has continued to resonate with casual horror hounds and genre auteurs alike.