Trieste Kelly Dunn is an American actress. She is known for her roles as Deputy Siobhan Kelly in the Cinemax series Banshee and U.S. Marshal Allison Knight in the NBC series Blindspot.
Personal life Dunn studied theater at the North Carolina School of the Arts. Before graduating in 2004, she appeared in a number of student films. Including those made by classmates and future collaborators Zach Clark, Brett Haley, Aaron Katz, and Brendan McFadden.
In 2010, Filmmaker Magazine named her one of the 25 New Faces of Independent in their Summer Issue, and the Los Angeles Times touted her as a "break out star" based on her roles in the independent films Cold Weather and The New Year.
Career Dunn first rose to prominence on the FOX TV series Canterbury's Law as Molly McConnell opposite Julianna Margulies. Her early film roles included critically lauded turns in United 93 (2006), Cold Weather (2010) and Vacation! (2010). She has also appeared on Fringe as Valerie Boone, the victim of a scientific experiment in the episode "Midnight", and also guest starred on HBO's Bored to Death. In 2014, she portrayed FBI Agent Elizabeth Ferrell on the TV series Believe concurrently with her co-starring role as Dep. Siobhan Kelly in Banshee. In late 2015, Dunn began a recurring role as U.S. Marshal Allison Knight, on the NBC drama Blindspot. In 2015, she played Natalie, a recurring character in the single season of Almost There, on Audience. Dunn has also appeared in guest roles on episodes of a number of other television series.
She portrayed an android in the music video for "Propagation", the single off Com Truise's 2017 album Iteration.
Filmography Film Year Title Role Notes 2004 Mysterious Skin Date in "Blood Prom" 2006 United 93 Deora Frances Bodley 2010 Cold Weather Gail The New Year Sunny Vacation Donna 2013 Loves Her Gun Allie 2015 Applesauce Nicki 2016 Almost There Natalie 2017 Infinity Baby Alison Blame Jennifer The Misogynists Amber 2019 Girl on the Third Floor Liz Koch 2023 Lousy Carter Sister
Television Year Title Role Notes 2006 Law & Order: Special Victims Unit Gloria Kulhane Episode: "Class" 2008 Canterbury's Law Molly McConnell Main cast 2009 Cupid Sonja Episode: "The Tommy Brown Affair" 2009 Fringe Valerie Boone Episode: "Midnight" 2009 Bored to Death Sophia Episode: "The Case of the Beautiful Blackmailer" 2011 Brothers & Sisters Lori Lynn Episode: "Walker Down the Aisle" 2013–2015 Banshee Siobhan Kelly Main Cast (seasons 1–3)26 episodes 2013 Golden Boy Margot Dixon Recurring character 2014 Believe Elizabeth Farrell Recurring character 2015 The Good Wife Amanda Marcassin Episode: "Innocents" 2015–2020 Blindspot Allison "Allie" Knight Recurring character 2016 Royal Pains Rachel Episode: "Palpating the Orbital Rim" 2016 Bull Captain Taylor Mathison Episode: "The Woman in 8D" 2018 Manhunt: Unabomber Theresa Oakes 2 episodes 2018 Elementary Sophie Bishop Episode: "An Infinite Capacity for Taking Pains" 2018 Strangers Elliott Episode: "Big Little Chill" 2019 The Passage Sierra Thompson Recurring character 2022 See Ambassador Trovere 5 episodes 2025 Chicago Fire Lieutenant Gregory Episode: "Too Close"
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