This image released by Roadside Attractions shows Dylan O'Brien, left, and James Sweeney in a scene from "Twinless." (Roadside Attractions via AP)
This image released by Roadside Attractions shows Dylan O'Brien, left, and James Sweeney in a scene from "Twinless." (Roadside Attractions via AP)
This image released by Roadside Attractions shows Dylan O'Brien, left, and James Sweeney in a scene from "Twinless." (Roadside Attractions via AP)
This image released by Roadside Attractions shows Dylan O'Brien, left, and James Sweeney in a scene from "Twinless." (Roadside Attractions via AP)
James Sweeney never had a twin, though he wanted one. The filmmaker grew up a military brat, and says he dreamed of a having a twin that would…