Matthew McConaughey is Southbound July 31, 2009 Matthew McConaughey, Eva Mendes join indie drama Southbound. Matthew McConaughey and Eva Mendes are in talks to star in indie drama Southbound. The film, which begins filming this September, follows a patrol officer (McConaughey) on the California/Mexico border who takes a bribe from a beautiful Mexican woman. The deal lands his family in danger and embroils him in a war between Mexican criminals and US immigration authorities. Jonathan Jakubowicz is directing the project from a Peter Craig script.