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.

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.

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,

Sundance: James Sweeney levels up with this confident and extremely clever story about two boys who meet in a support group for siblings who've lost a twin.