High Quality Content by WIKIPEDIA articles! This is list of serials of the science fiction drama television series The Sarah Jane Adventures. The first episode, a 60-minute special, premiered on 1 January 2007. A series of ten 25-minute episodes aired from 24 September until 19 November 2007. Series 1 is made up of five two-part serials, the second and subsequent series consist of six two-part serials each. The third, 12-episode series produced by Russell T Davies began airing on 15 October 2009. The twelve-part fourth series began airing 11 October 2010. A fifth series was confirmed for production and eventual broadcast in 2011, but only three stories were completed prior to the death of Elisabeth Sladen, the series` lead actress.