Jewel Belair Staite (born June 2, 1982) is a Canadian actress. She is known for her roles as Kaylee Frye in the Fox television series Firefly (2002–03) and its spin-off theatrical film Serenity (2005), and as Dr. Jennifer Keller on Sci-Fi Channel's science-fiction television series Stargate Atlantis (2007–09). Staite also starred in her youth as Catalina in Space Cases (1996) and as "Becca" Fisher in Flash Forward (1996–97), and more recently as Raquel Westbrook in the Canadian drama The L.A. Complex (2012) and Caroline Swift in AMC's crime drama The Killing (2013–14).