• Air date: 10 Jul '25 40 episodes
      This season is the Summer of Mystery as the Houseguests enter the Hotel Mystère, a place where secrets lurk behind every door and nothing is as it seems. This season celebrates the 25-year anniversary of the series as a whole.
  • List of Episodes (40)
    • 1. Episode 1

      10 Jul '25
      16 complete strangers check into Big Brother’s Hotel Mystere, where mysteries lurk around every corner and nothing is as it seems... a maniacal master mind, a secret accomplice a mystery Houseguest and 3 action packed competitions will unleash a summer of suspense, suspects and secrets, challenging our Houseguests like never before!
    • 2. Episode 2

      13 Jul '25
      Will the Masterminds accomplice be discovered and ejected, or will they go undetected and join the game? Plus, will a shower create more chaos than the Mastermind? And Vince must nominate three Houseguests, who will hit the block?
    • 3. Episode 3

      16 Jul '25
      The Power of Veto is on the line, will it be used to save one of the nominees? Plus, it's a shocking first Veto meeting of the summer.
    • 4. Episode 4

      17 Jul '25
      It's the inaugural BB Block Buster! Who will win their way off the Chopping Block? Will it be Amy, Zae, or Kelley who becomes the first evicted? Plus, the Queen of Quarrels goes toe-to-toe with Zae.
    • 5. Episode 5

      20 Jul '25
      A new Head of Household will take power! Plus, how will a BB break-in completely shake up the game? And three more Houseguests hit the chopping block.
    • 6. Episode 6

      23 Jul '25
      BB action, drama, past houseguest cameos, and powers unleashed!
    • 7. Episode 7

      24 Jul '25
      Will, Amy, and Adrian compete in the BB Block Buster! Who will be saved from the block? And who will be the next evicted? Plus, BB legends Taylor and Derrick unlock some big moves!
    • 8. Big Brother: Unlocked 7/25/25

      25 Jul '25
      Previous BB winners Taylor Hale and Derrick Levasseur host the first ever Big Brother: Unlocked!
    • 9. Episode 9

      27 Jul '25
      Power will shift again as the Head of Household is up for grabs, and which three Houseguests will be nominated for eviction? Plus, Mickey still has a mystery power up her sleeve, will she unleash it tonight?
    • 10. Episode 10

      30 Jul '25
      Who will pull off the ultimate heist and score the Power of Veto, and will it lead to another jaw dropping Veto meeting? Plus, we untangle a love triangle.
    • 11. Episode 11

      31 Jul '25
      Adrian, Kelley, and Will go to battle in the BB Block Buster! Who will win Safety? And who will be the next Houseguest sent to see Julie?
    • 12. Episode 12

      03 Aug '25
      The Head of Household is up for grabs, and then things get crazy when a power is unleashed which turns the house completely upside down.
    • 13. Episode 13

      06 Aug '25
      With Mickey stealing Rylie's crown, all hell breaks loose. Plus, who will be nominated for eviction? And the power of Veto is back up for grabs. Will the golden power be used again? Then, are we in store for another shocking Veto meeting?
    • 14. Episode 14

      07 Aug '25
      Who will the BB Blockbuster save from eviction, and who will be the fourth Houseguest sent packing?
    • 15. Big Brother: Unlocked 8/8/25

      08 Aug '25
      Taylor and Derrick are back to break down the latest in the world of BB.
    • 16. Episode 16

      10 Aug '25
      It's an eliminator Head of Household competition... Who will be the last player standing and which Houseguests will hit the block next?
    • 17. Episode 17

      13 Aug '25
      The Veto is up for grabs in a BB classic! Who will win prizes, and what will be the punishments? Plus, since night one Zach has harboured a secret power. Will he finally unleash the BB buy-off?
    • 18. Episode 18

      14 Aug '25
      It’s time for the nominees to enter the BB Blockbuster Arena! Who will win safety and who will be booted from the house?
    • 19. Episode 19

      17 Aug '25
      It's the terrifying Head of Household competition! Who will survive the party slasher and ascend to power, and which three Houseguests will end up on the block?
    • 20. Episode 20

      20 Aug '25
      The Veto is on the line in the legendary OTEV competition. Who will win the golden power?
    • 21. Episode 21

      21 Aug '25
      Will a showmance be torn apart? It all comes down to who wins safety in the BB Blockbuster…. Plus another Houseguest will be evicted!
    • 22. Episode 22

      24 Aug '25
      It's the fallout from Riley's emotional exit. Plus the epic wall competition, who will endure this BB classic to become the new Head of Household? And three more Houseguests will hit the block.
    • 23. Episode 23

      27 Aug '25
      It's a Veto Competition to die for! Who will win the golden power, and will it leave the door open for Vince to take a shot at Rachel?
    • 24. Episode 24

      28 Aug '25
      Who will the BB Block Buster save from Eviction? Katherine, Kelley, or Ava? And who will be the next player sent packing? Keanu and Rachel go from frenemies back to enemies!
    • 25. Episode 25

      31 Aug '25
      Who will become the next Head of Household? And with the last eviction before jury looming, who is hitting the block next? With only four weeks until the winner is crowned, every game move is critical!