Director Shane Carruth makes his long-awaited return to the silver screen with Upstream Color, following his critically-acclaimed 2004 debut Primer. Andrew Sensenig and Amy Seimetz star as a couple who find themselves trapped within the life cycle of a strange organism. The third trailer has debuted,offering a new glimpse at this couple's life, which only adds to the growing mystery behind the story. The film makes its world debut at the Sundance Film Festival later this month, before debuting in limited release April 5. You can also CLICK HERE and CLICK HERE to watch the first two trailers.