While most of us were busy stuffing our faces over the holiday weekend, Tony Scott and 20^th Century Fox discussed illegal drug trafficking. The Unstoppable producer/director is now lined up to direct Narco Sub, a drug-centric action thriller based on a spec script by David Guggenheim (Safe House). As of now, the plot details are being kept quiet, but the title indicates it will have something to do with submersible crafts used by South American drug cartels to smuggle product into the states. Although Denzel Washington has been a staple in many of Scott’s films, there is no news on his involvement at the moment. Hit the jump for more on Narco Sub.