Garret Dillahunt appeared as a regular in several short lived series on ABC and Showtime, and landed guest spots on TV shows such as The X-Files and NYPD Blue among others, before playing two distinctly different characters on the HBO series Deadwood: Jack McCall in 2004 and Francis Wolcott in 2005 (Dillahunt returned in an uncredited role as a townsman in the 2019 Deadwood movie). He later had a recurring role on USA Network’s The 4400. Dillahunt portrayed Steve Curtis for three seasons on ER (2005–06). Later roles included Dr. Michael Smith on HBO’s John from Cincinnati; Cromartie, John Henry and George Laszlo on FOX’s Terminator: The Sarah Connor Chronicles; Roman Nevikov, a Russian gangster, on NBC’s Life; and Mason Turner, a paralyzed serial killer on Criminal Minds. He played Simon Escher in the Burn Notice third-season finale airing March 4, 2010 on USA, later reprising the role in the show’s fourth and seventh seasons. Dillahunt appeared in such films as The Assassination of Jesse James by the Coward Robert Ford, No Country for Old Men, The Road, Winter’s Bone, The Last House On The Left, TalhotBlonde, and the indie horror film, Burning Bright. From 2010 to 2014, Dillahunt co-starred as Burt Chance on the Fox comedy Raising Hope. He began a recurring role on The Mindy Project in 2015 and on The Guest Book in 2017. Dillahunt starred in the 2018 action film Braven directed by Lin Oeding. Dillahunt played Kassen, the leader of a group of mercenaries and drug runners who retrieve the drug stash and plan to kill Joe Braven and his family. He joined the regular cast of the fourth season of Fear the Walking Dead as John Dorie.
Garret Dillahunt announced to be part of Where the Crawdads Sing – a drama film based on the novel of the same name by Delia Owens
It is scheduled to be released on June 24, 2022.