At first, the idea of someone—presumably Casey Affleck—walking around in a white sheet with black eyeholes seems silly. Then it turns creepy and eventually becomes incontrovertibly sad.

Since its debut at Sundance earlier this year, A Ghost Story has garnered a bunch of praise from film critics. Written and directed by David Lowery and starring Rooney Mara and Casey Affleck, it’s from the same studio behind Ex Machina, The Witch and 20th Century Women. The trailer offers up broad strokes of emotional tone but it looks like there might be an actual supernatural afterlife happening in this movie as well. We’ll see when A Ghost Movie comes out on July 7.