Heather As Laurie Holden, she is a Canadian-American actress best known for her roles in The X-Files (1996–2002), Adele Stanton in The Majestic (2001), Cybil Bennett in Silent Hill (2006), Amanda Dumfries in The Mist (2007), Olivia Murray in The Shield (2008), and Andrea in The Walking Dead (2010–2013, 2020).