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.