Hannah Murray was born 1 July 1989 is an English actress, best known for playing Cassie Ainsworth in the E4 teen drama Skins from 2007 to 2008. Murray first television role was in Skins, playing the role of Cassie Ainsworth, a gentle, "spacey", yet self-destructive teenager with an eating disorder. At nearly 17 years old, she had learned that auditions were taking place for the series through her local youth theatre and decided to audition for the experience. She and April Pearson were the first two to get cast for the show. Murray went on to appear in the first two series which broadcast in 2007-2008 on E4. Along with the primary cast members, she left at the end of the show second series to make way for a new generation of characters. On the decision to replace the cast, Murray has said that "it would be really silly to be in a teenage drama if you are no longer a teenager".

Following Skins in May 2008, Murray made her stage debut as Mia in the critically acclaimed That Face, a West End production at the Duke of York Theatre. That same year she had a small role in the black comedy In Bruges, but her scene was eventually cut from the final version of the film.

In 2009 Murray appeared in the ITV adaptation of Agatha Christie novel Why Did not They Ask Evans?, and she is expected to appear in Womb, to be released later in 2010. For 2010 Murray will star in an adaptation of Enda Walshs Chatroom, directed by Hideo Nakata. In early January, she appeared in Above Suspicion: the Red Dahlia, an adaptation of the Linda La Plante novel.