Series 4

Series 4 is an ambiguous term on this wiki, since many things could be considered "the fourth series" of a particular programme. It may mean:


 * Season 4, the 1966 series of Doctor Who, which introduced the Second Doctor
 * Series 4 (Doctor Who), the 2008 series of Doctor Who, which most strongly featured Donna Noble
 * Series 4 (Torchwood), the 2011 series of Torchwood, umbrella titled  Miracle Day
 * Series 4 (SJA), the 2010 series of The Sarah Jane Adventures, which sent Luke Smith off to Oxford University