Maisie Williams stole hearts with her 2011 screen debut as the imperiled but indefatigable would-be warrior princess on HBO's phenomenal fantasy series "Game of Thrones" (2011- ). The U.K. native trained from a young age as a dancer, which proved handy as she auditioned for Arya Stark, the irrepressible "Game of Thrones" tomboy who was more interested in making herself a great swordswoman than becoming a demure object of courtly love. With the advent of "GoT" in spring 2011, Williams' portrayal of Arya drew adoration from both critics and the most diehard fans of author George R.R. Martin's source novels. In 2012, she took a starring role in the BBC horror miniseries "The Secret of Crickley Hall." Standing out among a vanguard of exemplary new talent on "Game of Thrones" and holding her own opposite some of the U.K.'s most venerable actors, Williams quickly established herself as one of Britain's most charismatic and naturalistic young thespians.