Director Langston Graham was the direct superior of CIA agent Sarah Walker, and assigned her to follow-up on Bryce's theft of the Intersect by sending her to Burbank to track down where he sent the data to. He is portrayed by Tony Todd. Graham is one of the few people who knew Sarah's real name (from her birth certificate, although the events shown in "Chuck Versus the Baby" suggest the certificate he saw might have been a fake), as well as the series of aliases she had used growing up as part of her father's con jobs. It was Graham who gave her the alias of "Sarah Walker".