Jaime Murray (born 21 July 1976) is an English actress, known for playing Stacie Monroe in the BBC series Hustle (2004–2012), Lila West in the Showtime series Dexter (2007), Gaia in the Starz miniseries Spartacus: Gods of the Arena (2011), Olivia Charles in The CW series Ringer (2011–2012), Helena G. Wells in the Syfy series Warehouse 13 (2010–2014), Stahma Tarr in the Syfy series Defiance (2013–2015), Fiona/the Black Fairy in the ABC series Once Upon a Time (2016–2017), Antoinette in The CW series The Originals (2018), and Nyssa al Ghul in Gotham.