Mark Moses was born in New York City and grew up in Evanston, Illinois. He played quarterback for his high school in Evanston, and went on to play another year at Ithaca College, in upstate New York, where he majored in English before dropping out and traveling abroad. Mark then got into NYU's Tisch School of the Arts grad program and graduated with a degree in theater. He immediately landed a role in the Broadway production, "Slab Boys", with Sean Penn and Kevin Bacon, and was working off-Broadway and in regional theaters when he met Oliver Stone, who cast him as "Lt. Wolfe" in the academy award-winning film, Platoon (1986). Oliver also cast Mark in academy nominated film, Born on the Fourth of July (1989) and The Doors (1991). He played community organizer Fred Ross in Diego Luna's "Cesar Chavez," (2014) He played a club owner who dies by ice-pick in Ridley Scott's Someone to Watch Over Me (1987), charged down Little Round Top in Gettysburg (1993), charged up San Juan Hill in Rough Riders (1997) and gave a pearl-handled revolver to a future enemy in the academy award nominated Clint Eastwood's Letters from Iwo Jima (2006). Mark played Kris Kristofferson's son in the HBO western, The Tracker (1988), announced the world was coming to an end in Deep Impact (1998), did it again in Seeking a Friend at the End of the World (2012) played the bad guy in Big Momma's House 2 (2006) and played "Attorney General Wyatt" in Swing Vote (2008), and was pure evil in Fear Inc.(2016) Audiences also know Mark from numerous television shows. He played Duck Philips in the Emmy Award winning Mad Men, Dennis Boyd in the Emmy Award winning Homeland, Paul Young in the Golden Globe winning and Emmy nominated Desperate Housewives, President Jeffrey Mitchner in The Last Ship, Colonel Alden Cox in Manhattan, Lt. Erik Carlson in The Killing, Mr. Robot, Berlin Station, Law and Order, Blue Bloods, Incorporated, Key and Peele, The Single Guy, Man Seeking Woman, Criminal Minds and many others. He is married to actress/playwright Annie LaRussa and they have two sons, Walker and Zane