Get your first look at Twinless, one of the buzziest films from the 2025 Sundance Film Festival. 10 Sundance movies you should know about now Written and directed by James Sweeney, Twinless stars Dylan O'Brien as Roman, a man grieving the loss of his identical twin, Rocky (also O'Brien). He heads to a bereavement support group for people who have lost their twins, where he meets Dennis (Sweeney). Dennis reminds Roman of his late twin, who was queer and charming much like Dennis is, whereas Roman is more reserved and straight. He and Dennis soon become fast friends, trauma bonding over their particular losses.The first half of the trailer for Twinless establishes Roman and Dennis' bromance, seeing the pair hanging out, running errands together, and mourning the loss of the person they viewed as their other half. It seems like Roman and Dennis are on a collision course with codependency, but then the trailer takes a dark turn, and any expectations you might have had about this just being another offbeat 2025 bromance comedy (see: Friendship) go flying out the window.Twinless' twists and turns earned praise from critics out of Sundance. The Hollywood Reporter's Lovia Gyarkye wrote that, "If the meme 'Never let them know your next move' was a movie, it would be this one," while IndieWire's David Ehrlich wrote, "[The] story makes a sharp and shrewdly executed swerve away from Apatow and towards Almodóvar or De Palma."Twinless also picked up two awards out of its world premiere at Sundance — the Audience Award: U.S. Dramatic, and a U.S. Dramatic Special Jury Award for Acting for O'Brien's performance.Twinless hits theaters Sept. 5.