Overview: The fourth of the semi finals sees another seven acts attempting to impress the judges and the viewers at home as they battle it out for a place in the series final.
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First Air Date: Dec 20, 2009Last Air date: Feb 24, 2013Season: 4 SeasonEpisode: 39 EpisodeRuntime: 60 minutesQuality: HDIMDb: 1.00 / 10 by 1 usersPopularity: 2.38Language: English