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Trailer for Twinless starring Dylan O’Brien and James Sweeney

July 30, 2025 by Amie Cranswick

Lionsgate & Roadside Attractions have shared a trailer for Twinless, the upcoming drama from writer-director James Sweeney.

The film follows two grieving young men Roman (Dylan O’Brien) and Dennis (Sweeney) as they strike a friendship after meeting at a twin support group, unaware that they each harbor secrets which could unravel everything.

Joining O’Brien and Sweeney in the cast are Lauren Graham, Aisling Franciosi, Chris Perfetti, Tasha Smith; watch the trailer below…

In Twinless, two young men meet in a twin support group and form an unlikely friendship. Roman (Dylan O’Brien) and Dennis (James Sweeney) both search for solace and an identity without their other halves and soon become inseparable outside the group. But when Roman meets Dennis’ ebullient co-worker, Marcie (Aisling Franciosi), all is revealed to be not what it seems, as each man harbors secrets that could unravel everything.

Twinless arrives in cinemas on September 5th.

 

Filed Under: Amie Cranswick, Movies, News, Trailers Tagged With: Aisling Franciosi, Chris Perfetti, Dylan O'Brien, James Sweeney, Lauren Graham, Tasha Smith, Twinless

About Amie Cranswick

Amie Cranswick has been part of Flickering Myth's editorial team for over a decade. She has a background in publishing and copyediting and has served as Executive Editor of FlickeringMyth.com since 2020.

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