Jewel Belair Staite (born June 2, 1982) is a Canadian actress. She is known for her roles as Catalina in Space Cases (1996–1997), Kaylee Frye in Firefly (2002–2003) and its spin-off film Serenity (2005), and Dr. Jennifer Keller on Stargate Atlantis (2007–2009). Staite has also starred as Raquel Westbrook in the Canadian drama The L.A. Complex (2012), and Caroline Swift in the crime drama, The Killing (2013-2014).