The Endless
From Justin Benson and Aaron Moorhead who directed
Resolution (great film) and
Spring (which I haven't seen but want to). Two brothers return to a death cult that they escaped from after receiving a cryptic video and find it hard to escape again. Moorhead and Benson are the leads in this film and they're passable but a lot of the side roles are really well done. The film starts off a bit slow but descends into a Lovecraftian, reflexive, mysterious kaleidoscope that goes into some really interesting territories. 5/5