Background and career
Dallas Mark Roberts (born May 10, 1970) is an American actor. He is best known for his roles as Milton Mamet in the third season of AMC's The Walking Dead (2012–2013), Eliot Delson in Unforgettable, and Owen Cavanaugh in The Good Wife. He also starred in the Netflix comedy Insatiable. In 2024, he portrayed Jerome Oziel in a recurring role in the Netflix biographical crime drama series Monsters: The Lyle and Erik Menendez Story.
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 State College of Florida, Manatee-Sarasota. In 1990, Roberts was accepted to the Juilliard School in New York City, where he graduated in 1994 as a member of the Drama Division's Group 23.
Roberts is primarily based in New York City, where he regularly appears in theatrical productions. Off-Broadway he has appeared in a revival of Lanford Wilson's Burn This, opposite Edward Norton and Catherine Keener; in Adam Rapp's Nocturne, for which he was nominated for a Drama Desk Award; and in Caryl Churchill's A Number, opposite Sam Shepard and later Arliss Howard, among others. Roberts' film work includes the screen adaptation of Michael Cunningham's A Home at the End of the World, and supporting roles in Walk the Line, The Notorious Bettie Page, 3:10 to Yuma, The Grey among others. He had a regular role on the Showtime drama The L Word. He starred in the AMC original series Rubicon as Miles Fiedler, a genius intelligence analyst at a national think tank. He appeared in twelve episodes of The Good Wife as Owen, the gay brother of Alicia Florrick (Julianna Margulies). He has also made many appearances on Law & Order and its spinoff, Law & Order: Special Victims Unit. He also appeared in a crossover arc between SVU, Chicago P.D. and Chicago Fire as serial killer Gregory Yates. From August 2012 through March 2013, Roberts was in the cast of The Walking Dead as scientist Milton Mamet, who studies "walkers" (zombies). From 2013 to 2015, he played Eliot Delson on Unforgettable.
Roberts is married to scenic designer Christine Jones; the couple have two sons.
Sources
Net-worth figure: Celebrity Net Worth (October 2026), in USD. Biography and career facts: the person's Wikipedia article and linked reporting. Snapshot date for all StarWorth figures: 28 October 2026.
