Jason O'Mara ("The Good Wife," "Complications") has joined the cast of ABC's "Marvel's Agents of S.H.I.E.L.D." in a key role - as the director of the titular organisation. Clark Gregg's Phil Coulson revealed in the final minutes of the third season finale that the organization had a new director, O'Mara taking on that part which is said to be a character whose Marvel roots go back to the 1940s. Marvel's Head of Television Jeph Loeb says: "Bringing Jason into the mix as the new director of S.H.I.E.L.D.