Dallas Mark Roberts is an American actor. He played Milton Mamet in season three of AMCs The Walking Dead . He was a regular on Seasonsandof Unforgettable as Eliot Delson, and has a recurring role as Owen Cavanaugh on The Good Wife since Season 2.
Roberts was born and raised in Houston, Texas, where he attended Paul Revere Middle School and Robert E. Lee High School. He moved to Sarasota, Florida, where he graduated from Sarasota High School in 1988 and attended Manatee Community College. In 1990, Roberts was accepted to the Juilliard School in New York City, where he graduated in 1994 as a member of the Drama Divisions Group 23.
Source: Wikipedia