In 2010, Kim directed, based on a screenplay from Hoon-jung Park, I Saw the Devil (2010), re-uniting with actors Choi Min-sik and Lee Byung-hun. The film won a number of awards, including Best Director and Best Film at Fantasporto, Special Jury Prize, Audience Award, Critics Award at the Gerardmer Film Festival, Best Lighting at the Grand Bell Awards, Best Foreign Language film from the Austin Film Critics Association and Best Editing from the 2011 Asian Film Awards.