William Joseph McCormack Jr. (born January 13, 1974) is an American actor, executive producer, screenwriter, and film director.
He appeared in the television series The Sopranos (1999–2001), Brothers & Sisters (2008–2009), and In Plain Sight (2008–2012), as well as the films American Outlaws (2001), Syriana (2005), and A Wrinkle in Time (2018).
He won a Lucille Lortel Award for his role in the off-Broadway one-act play The Long Christmas Ride Home (2003).
[4] He also played a recurring role as the FBI agent in the television drama In Plain Sight, which stars his older sister, Mary.
[5] In 1996, McCormack appeared on Broadway at the Criterion Center Stage Right as a member of the ensemble in a revival of the drama play Summer and Smoke (1948) by Tennessee Williams, produced by The Roundabout Theatre Company.