▁ 2 0 1 4 ▁the ▁first ▁full ▁length ▁tra iler ▁was ▁a ired ▁on ▁BBC ▁One , ▁during ▁the ▁final ▁half - time ▁of ▁the ▁ 2 0 1 4 ▁FIFA ▁World ▁Cup . ▁ ▁Le ading ▁up ▁to ▁the ▁launch ▁of ▁the ▁series , ▁four ▁te aser ▁tra ilers ▁were ▁released ▁on ▁ 2 3 ▁May , ▁ 2 7 ▁June , ▁ 4 ▁July ▁and ▁ 2 7 ▁July ▁ 2 0 1 4 . ▁On ▁ 7 ▁August ▁ 2 0 1 4 ▁an ▁interview ▁with ▁Peter ▁Cap ald i ▁was ▁shown ▁on ▁BBC ▁News , ▁featuring ▁cli ps ▁from ▁the ▁second ▁episode . ▁Starting ▁on ▁ 1 8 ▁August , ▁the ▁BBC ▁released ▁a ▁series ▁of ▁six ▁short ▁te as ers ▁counting ▁down ▁to ▁the ▁series ' ▁premi ere . ▁ ▁E pisode ▁le aks ▁ ▁On ▁ 6 ▁July ▁ 2 0 1 4 , ▁the ▁scripts ▁and ▁rough ▁" pre ▁air ▁screen ers " ▁for ▁the ▁first ▁five ▁episodes ▁of ▁the ▁series ▁were ▁in ad vert ently ▁le aked ▁online ▁from ▁BBC ▁World wide ' s ▁Latin ▁America ▁headquarters . ▁The ▁le aked ▁scripts ▁were ▁immediately ▁shared ▁online , ▁prompt ing ▁wide ▁coverage ▁in ▁the ▁media . ▁In ▁a ▁statement , ▁BBC ▁World wide ▁asked ▁people ▁with ▁access ▁to ▁the ▁le aked ▁material ▁to ▁keep ▁the ▁story lines ▁of ▁the ▁five ▁episodes ▁secret . ▁ ▁On ▁ 1 2 ▁July , ▁the ▁black ▁and ▁white , ▁wat erm ark ed ▁" pre ▁air ▁sc re ener