Early this week we learned that the latest film from the creator of Primer would be premiering at the Sundance Film Festival, and now we're getting our first real look at Shane Carruth's Upstream Color. Descriptions of the movie have been intriguingly vague — "A man and woman are drawn together, entangled in the life cycle of an ageless organism" — and there's not a lot of additional specifics here. What we do get is a sense of slowly building dread, and some brief glimpses at what could very well be the ageless organism in question. Check it out below.