Technical issues aside, James Sweeney's sophomore outing as writer, director and star was very warmly received inside Park City's Eccles Center Theatre to help kick off this year's Sundance Film Festival.

Sundance: Dylan O'Brien stars in this extremely clever story about two boys who meet in a support group for siblings who've lost a twin.

Dylan O'Brien talks about the inclusion of an intimacy coordinator while shooting the Sundance comedic drama "Twinless."

In James Sweeney's second feature, which also stars Lauren Graham, Aisling Franciosi and Chris Perfetti, two young men at a grief support group form an unlikely friendship.

I hope that is not the fate of Twinless, a singular, beguiling film. Writer-director James Sweeney, who also co-stars, does trade in some of the stereotypical quirk and tic of Park City ephemera. But he deftly stitches those fabrics into something new,

Dylan O'Brien and James Sweeney star in Sweeney's diabolical dark comedy "Twinless," about two men who meet in a twin bereavement group.

In James Sweeney's sophomore feature 'Twinless', he navigates loneliness, anxiety, depression and other common millennial pastimes.

Dylan O'Brien is startling playing a set of very different twin brothers in James Sweeney's impressive Sundance dramedy 'Twinless'

Fifteen minutes before the world premiere of ‘Twinless,’ a dark comedy that sees ‘The Maze Runner’ star playing a character who is grieving the loss of his twin brother, the actor was practically giddy as he talked about the film.