Julian Fellowes in a school play and shortly after had a small role in his television production of The Prince and the Pauper in 1996. Career Since 1996, Myles has appeared in a number of films and television productions. Following her success in The Prince and the Pauper, Myles made her film debut in Mansfield Park (1999) and had a small role in Guest House Paradiso (1999). After roles in the television series Heartbeat and Foyle's War, Myles starred as Victoria Abberline in the thriller film From Hell (2001) alongside Johnny Depp with Myles playing his wife. Myles played a main role in the comedy-romance film The Abduction Club (2002) before then playing the role of Erika in the 2003 vampire film Underworld with Kate Beckinsale, and reprised the character in its sequel, Underworld: Evolution (2006). In 2003, she also starred in the thriller Out of Bounds and played Lady Penelope in Thunderbirds (2004), the film version of the classic television show of the same name. Myles initially had the choice to star in either Thunderbirds or Troy but she chose the former as she said "Lady Penelope is such an iconic character". In 2005, Myles starred in the two-part war drama miniseries Colditz with Damian Lewis and Tom Hardy. In 2006, she co-starred as Isolde in the epic romantic drama Tristan & Isolde opposite James Franco and produced by Ridley Scott. Myles appeared as Madame de Pompadour in the 2006 Doctor Who episode "The Girl in the Fireplace", which is often referred to as one of the best episodes of the series. The episode was nominated for a Nebula Award and won the 2007 Hugo Award for Best Dramatic Presentation, Short Form. Myles also had roles as Gwenda Halliday in the British detective drama Agatha Christie's Marple: Sleeping Murder and Sophie Amsden in American thriller Covert One: The Hades Factor on television before starring in the 2006 comedy film Art School Confidential. Also in 2006, she appeared as Lucy Westenra in a BBC adaptation of Dracula. In 2007, Myles was cast as Beth Turner in the popular CBS supernatural television drama Moonlight, a role she would play until the show's end in 2008. Moonlight won Best New Drama in the 2007 People's Choice Awards. Myles was nominated for the Best Actress Award in 2007 for her role as Kate in Hallam Foe from the British Independent Film Award committee,