 " The Stolen Earth " is the twelfth episode of the fourth series and the 750th overall episode of the British science fiction television series Doctor Who . The episode was written by show runner and head writer Russell T Davies and is the first of a two @-@ part crossover story with spin @-@ offs The Sarah Jane Adventures and Torchwood ; the concluding episode is " Journey 's End " , the finale of the fourth series . It was first broadcast on BBC One on 28 June 2008 . 
