Brook made her full screen debut with a minor role in the film Sorted, where she can be seen involved in a lesbian scene. Shortly thereafter she also appeared in the film Ripper. She played the girlfriend of Clark Kent/Superman's best friend Lex Luthor in four episodes of Warner Bros.' Smallville during the show's first season (2001 - 2002). She has also completed assignments as a movie actress in Canada and made a short appearance as Lyle's girlfriend in the 2003 movie The Italian Job. Her first starring role was in School for Seduction, a 2004 film - she received positive reviews for her role, "Seduction offers a few twists on the rapidly degenerating format, not the least of which is the comely Brook in the lead role." In 2004 she also played character Nikki Morris in the video game Need for Speed Underground 2, alongside Brooke Burke. In 2005 she appeared in the Philippe Vidal film House of 9, a thriller about nine seemingly unconnected strangers captured and locked in a house together. The people are forced to compete against one another, in order to survive. 
