TV Big Brother - Season 12 Episode 20 : Episode 20 Big Brother - Season 12 Episode 20 : Episode 20 4.071/10 by 21 users All that stands between the Top 4 and a place in the grand final is one incredible nomination challenge. Who will win the power to determine the Final 3 for 2020? Details Casts Posters Images Title Big Brother - Season 12 Episode 20 : Episode 20 Alternative Titles Big Brother (AU), Big Brother (Australia), Big Brother AU First Air Date 2001-04-24 Last Air Date 2025-12-08 Number of Episodes 1484 Number of Seasons 16 Genres Reality, Networks 10, Nine Network, Seven Network, Casts Mike Goldman, Mel Tracina Plot Keywords , Self - Narrator (voice) Mike Goldman Self - Host Mel Tracina Episodes List Big Brother Season 12 :Episode 1 Episode 1 Episode 1 2020-06-08 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 2 Episode 2 Episode 2 2020-06-09 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 3 Episode 3 Episode 3 2020-06-10 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 4 Episode 4 Episode 4 2020-06-14 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 5 Episode 5 Episode 5 2020-06-15 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 6 Episode 6 Episode 6 2020-06-16 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 7 Episode 7 Episode 7 2020-06-21 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 8 Episode 8 Episode 8 2020-06-22 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 9 Episode 9 Episode 9 2020-06-23 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 10 Episode 10 Episode 10 2020-06-28 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 11 Episode 11 Episode 11 2020-06-29 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 12 Episode 12 Episode 12 2020-06-30 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 13 Episode 13 Episode 13 2020-07-05 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 14 Episode 14 Episode 14 2020-07-06 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 15 Episode 15 Episode 15 2020-07-07 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 16 Episode 16 Episode 16 2020-07-12 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 17 Episode 17 Episode 17 2020-07-13 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 18 Episode 18 Episode 18 2020-07-14 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 19 Episode 19 Episode 19 2020-07-19 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 20 Episode 20 Episode 20 2020-07-20 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other... Big Brother Season 12 :Episode 21 Episode 21 Episode 21 2020-07-21 Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other...