TV Big Brother - Season 12 Episode 18 : Episode 18 Big Brother - Season 12 Episode 18 : Episode 18 4.071/10 by 21 users With only four days left in the house, the $250,000 prize is closer than ever as two housemates roll the dice on Big Brother’s biggest twist yet! Big Brother is hosted by Sonia Kruger. Details Casts Posters Images Title Big Brother - Season 12 Episode 18 : Episode 18 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...