Doc Zone4. Sezon4. SezonSezon numarası4Season name—GörsellerGörsel yokAfiş#GörselBaşlıkYayınlandı1Malls R Us20 Ağu 20092The Spies Who Came in from the Sea20 Ağu 20093The Beat Goes On (1)27 Ağu 20094The Beat Goes On (1)3 Eyl 20095Rise Up (1)10 Eyl 20096Rise Up (2)17 Eyl 20097Pedal Power24 Eyl 20098Canada, Above and Beyond - First Flight8 Eki 20099Canada, Above and Beyond - Conquering Geology15 Eki 200910Canada, Above and Beyond - Lifelines22 Eki 200911Canada, Above and Beyond - Dancing with Danger29 Eki 200912Berlin, 20 Years After5 Kas 200913After Elizabeth II12 Kas 200914Up Against the Wall19 Kas 200915Carbon Hunters26 Kas 200916The Secret World of Shoplifting3 Ara 200917Mounties Under Fire21 Oca 201018CannaBiz28 Oca 201019Hyper Parents and Coddled Kids4 Şub 201020Google World11 Şub 201021Tasered18 Şub 201022Love, Hate & Propaganda: The Strongmen4 Mar 201023Love, Hate & Propaganda: Selling War11 Mar 201024Love, Hate & Propaganda: Meet the Enemy18 Mar 201025Love, Hate & Propaganda: Truth and Total War25 Mar 201026Love, Hate & Propaganda: Hiding the Horrors1 Nis 201027Love, Hate & Propaganda: Changing the Story8 Nis 2010