pilot episode of Fox's 2009 mid-season series Human Target. She has played several prominent video game roles in recent years; including Kilian Quatar in Command & Conquer 3: Tiberium Wars, Veronica Dare in Halo 3: ODST and EDI, the artificial intelligence aboard the Normandy SR-2 in Mass Effect 2 and Mass Effect 3. She voices Sarah Kerrigan in StarCraft II: Wings of Liberty and the expansion sets Heart of the Swarm and Legacy of the Void. Helfer voices Black Cat in The Spectacular Spider-Man and reprised her role in Spider-Man: Web of Shadows. Helfer joined the cast of Jerry Bruckheimer's TNT drama, Dark Blue, as FBI Special Agent Alex Rice. The show was cancelled in November 2010 because of low ratings. In October 2010, she made a guest appearance on Lie to Me. In 2011, she starred in The Black Keys' music video for "Howlin' for You". She made guest appearances in No Ordinary Family (2011), and Franklin & Bash (2011). In 2011, Helfer starred as Morgana, a necromancer, in the TV series pilot 17th Precinct from Ron Moore with Galactica's co-stars James Callis and Jamie Bamber. In October 2011, she got the lead role in the TV pilot Scent of the Missing as Susannah, a K-9 Search and Rescue Volunteer. In November 2011, she appeared in the Hallmark TV movie Mistletoe Over Manhattan. For 2012, she signed for the recurring role of Alex Clark in the new NBC TV Series The Firm. On May 16, 2012, she appeared in season seven of the CBS series Criminal Minds, in which she led a team of bank-robbing serial killers. She guest starred in the second season of the Jane Espenson web series, Husbands. In 2014, she played Molly Parker on ABC's Killer Women, a remake of the Argentinian drama Mujeres Asesinas, with producer Sofia Vergara. Also in 2014, she played Viondra Denniger, the steward and captain's wife of the titular starship in the miniseries Ascension on its long journey carrying people to populate a new world. Helfer voiced Sonya Blade in the fighting game, Mortal Kombat X, which was released in April 2015. In 2015, she appeared in the series finale of Falling Skies as the Espheni Queen, the leader of the alien race that had invaded Earth and devastated humanity. She also played Louise, a woman attending a doll convention, in the web series Con Man. In 2016, Helfer was