Laura Dianne Vandervoort (born September 22, 1984) is a Canadian actress. She is best known for her role as Lisa in the ABC science fiction series V (2009). She also known for role as Sadie Harrison in the CTV teen drama series Instant Star, Arla "The Bolt-Gun Killer" Cogan in the Syfy supernatural drama series Haven, Kara Zor-El (Supergirl) in...