Elizabeth Mitchell is an American actress. She is best known for her lead role as Juliet Burke on the ABC mystery drama series Lost (2006–2010), for which she received a Primetime Emmy Award nomination. Mitchell also had lead roles on the television series V (2009–2010), Revolution (2012–2014), Dead of Summer (2016), and The Santa Clauses (2022–present). She had recurring roles on the television series ER (2000–2001), Once Upon a Time (2014), The Expanse, and Outer Banks (2021–present).

The Expanse is an American science fiction television series developed by Mark Fergus and Hawk Ostby for the Syfy network and is based on the series of novels of the same name by James S. A. Corey. Set in a future where humanity has colonized the Solar System, it follows a disparate band of protagonists — United Nations Security Council member Chrisjen Avasarala, cynical detective Josephus Miller, and ship's officer James Holden and his crew — as they unwittingly unravel and place themselves at the center of a conspiracy that threatens the system's fragile peace, while dealing with existential crises brought forth by newly discovered alien technology.