"Journey's End" is the thirteenth and final episode of the fourth series of British science fiction television series Doctor Who, first broadcast on BBC One on 5 July 2008. It is the second episode of a two-part crossover story featuring the characters of spin-off shows Torchwood and The Sarah Jane Adventures, preceded by "The Stolen Earth". At 65 minutes in length, it was approximately 20 minutes longer than a standard revived series episode. It marked the final regular appearance of Donna Noble. It received mixed reviews, not matching the acclaim of "The Stolen Earth".