It's difficult to talk about The One I Love without revealing too much. So, here are four non-spoilery things you need to know about what's likely to become one of the most talked about movies of the year.
1. It stars Mad Men's Elisabeth Moss and The Mindy Project's Mark Duplass as a broken down couple looking to rejuvenate their relationship with a weekend trip to a secluded vacation house. If that sounds kind of humdrum, we promise you: It isn't.
2. When The One I Love premiered at this year's Sundance Film Festival, all anyone could talk about was an epic, unimaginable twist that completely flips the rom-com genre on its head. To reveal it here would be a crime punishable by death.
3. It's an assured directorial debut by Charlie McDowell (son of Malcolm McDowell and Mary Steenburgen, and boyfriend of Rooney Mara), and it deserves to be seen with fresh eyes.
4. The One I Love hits VOD in August, and opens in limited release on August 23.
Watch the cryptic first trailer below.