Independent Cinema writes: Shane Carruth was an unknown as a filmmaker when he debuted “Primer” at the 2004 Sundance Film Festival. A time travel film with highly scientific elements, “Primer” was thought of as a return to the intelligence of Science Fiction filmmaking and ideas. Awarded with the Alfred P. Sloan prize for films dealing with science and technology & the Grand Jury prize, Carruth’s career looked as it was about to bloom and he would become one of the best filmmakers to fly out of Sundance, until he disappeared. Within the years, Carruth had revealed work on a film that he had worked on for quite a few years called “A Topiary” but fell apart in development. Thankfully after nearly a ten year wait Carruth has released his latest film, Upstream Color.