Amy Louise Acker (born December 5, 1976) is an American actress, best known for her roles as Root on the scifi drama series Person of Interest (2012–2016), Caitlin Strucker on the superhero drama series The Gifted (2017-2019, based on Marvel Comics' X-Men), Winifred Burkle / Illyria on the supernatural drama series Angel (2001–2004), and Kelly Peyton on the action drama series Alias (2005–2006). She has been married to actor James Carpinello since 2003 and they have 2 children.

Filmography

• 2026My Christmas Cowboy — Meg
• 2025Easier Than You Think — Woman Two, Director
• 2025The Long Run — Amy
• 2025The Unbreakable Boy — Lori
• 2024Average Joe — Denise Kennedy
• 2024Ordinary Angels — Theresa Schmitt
• The Watchful Eye — Tory
• 2022Creeper — Lorrie
• 2021Crashing Through the Snow — Maggie Collins
• 9-1-1: Lone Star — Catherine
• 2020Outside — Woman, Camera Operator, Producer, Writer, Director
• 2020Superman: Red Son — Lois Lane (voice)
• All Rise — Georgia Knight
• God Friended Me — Tammy
• 2018The Way It Begins — Executive Producer
• 2017Amanda & Jack Go Glamping — Amanda Spencer
• The Gifted — Caitlin Strucker
• 2016A Nutcracker Christmas — Lily
• MacGyver — Sarah Adler
• 2016The Energy Specialist — Claire
• 2015A Novel Romance — Sophie Atkinson
• Chicago Med — Heather Williams
• Con Man — Dawn Jones (uncredited)
• 2014Let's Kill Ward's Wife — Gina
• 2014The Lord of Catan — Sugar Monkey
• Marvel's Agents of S.H.I.E.L.D. — Audrey Nathan
• 2013Much Ado About Nothing — Beatrice
• 2012The Cabin in the Woods — Wendy Lin
• 2011Dear Santa — Crystal Carruthers
• Grimm — Lena Marcinko
• Once Upon a Time — Astrid / Nova
• Person of Interest — Root, Caroline Turing
• 2011Sironia — Molly
• Suits — Esther Edelstein
• Happy Town — Rachel Conroy
• Human Target — Katherine Walters
• No Ordinary Family — Amanda Grayson
• Scooby-Doo! Mystery Incorporated — Nova (voice)
• 200921 and a Wake-Up — Caitlin Murphy
• Dollhouse — Dr. Claire Saunders / Whiskey
• The Good Wife — Trish Arkin
• Warehouse 13 — Tracey
• 2008A Near Death Experience — Ellie Daly
• 2008Fire and Ice: The Dragon Chronicles — Luisa
• Drive — Kathryn Tully
• October Road
• Private Practice — Molly Madison
• 2006Crossroads — Jill Yarrut
• Ghost Whisperer — Tessa Lucas
• Grey's Anatomy — Kathleen Shepherd
• How I Met Your Mother — Penelope
• 2005Mr. Dramatic — Jody
• Supernatural — Andrea Barr
• Justice League Unlimited — The Huntress (voice)
• 2003Return to the Batcave: The Misadventures of Adam and Burt — Bonnie Lindsey
• 2002Catch Me If You Can — Miggy
• 2002Groom Lake — Kate
• Alias — Kelly Peyton
• Law & Order: Criminal Intent — Leslie Le Zard
• Special Unit 2 — Nancy
• CSI: Crime Scene Investigation — Sandy Colfax, Sandy Larken
• Angel — Fred Burkle / Illyria
• Wishbone — Catherine Morland
• Invader — Diane

Appearances as themselves (3)

• 2018United We Fan — Self
• 2005Celebrity Mix — Self (archive footage)
• The New Tom Green Show — Self