Big Brother - Season 13 (2021)

Get ready for a week of surprises, but they're not necessarily all good ones. Which surprise will shake up the entire house?

It's surprise after surprise as Surprise Week continues. As one housemate's position hangs in the balance, will his big mouth be his downfall?

Big Brother has the hungry housemates run off their feet and it's a battle royale as carnivore and vegan go head-to-head.

Surprise Week ends with the biggest shock of them all when Big Brother's secret attic is revealed.

It's Big Red Button week and the housemates have to decide whether to push or not to push. With all housemates on edge, someone has a plan to change things up.

The Big Red Button is in the house and no-one knows if it will bring punishment or reward. As reality hits, loyalties are tested and the determination to win is greater than ever.

As Big Red Button week continues, Big Brother reveals another secret room. While one housemate feels more isolated than ever, there's an advantage so big it'll push everyone to their limits.

Keep your friends close and your enemies closer is the name of the game for one determined housemate. A monumental blindside unfolds when they finally get their shot at revenge.

The housemates are about to get the shock of their lives as six incredible intruders prepare to turn the game upside down.

Big Brother's panic room takes two new victims, and which two intruders will rise to the challenge and join the game for good?

The housemates are tasked with mission impossible; a pumped-up challenge leaves someone feeling deflated; two housemates get close and an eviction ceremony shock.

Housemates have to keep their cool in the most nail-biting challenge yet. Could a budding romance be the kiss of death? And Sonia reveals another big twist.

While the walking dead housemate gets ready for battle, a new force is on the rise. Will they be strong enough to make their target the next walking dead?

Big Brother flies in some special guests for a task that has everyone in a flap. Which massive player won't survive the walking dead eviction showdown?

Big Brother unleashes the devil within, pushing housemates to the limit - mentally, physically and emotionally - in the most brutal challenges yet.

Big Brother adds fuel to the fire of Hell Week with a spectacular twist that will send home a major player.

Hell Week reaches it dramatic conclusion with the most terrifying challenge in program history. Then, an almighty bombshell blows the game up.

The new heads of house embrace their role, joining forces to create havoc. Meanwhile, past alliances are thrown out the window.

As the heads of house enjoy the perks and power of being 2IC, Big Brother goes into overdrive, revving up the rest of the housemates. Can one housemate talk their way back into a circle of trust?

With just eight housemates remaining, paranoia is high and huge deals are being made. What massive game-changer lies with Big Brother's secret eye?

With the end game getting closer, get ready for the biggest move the game has seen as the shimmering jewel in Big Brother's crown is revealed.

As housemates deal with the ramifications of the last eviction, someone awaits a roommate in the mirrored room - but will they go crazy first?

A massive challenge with a massive reward will push housemates to their limits but the biggest surprise is yet to come when the mirrored room is revealed.

The end is in sight and it's do or die for the final seven housemates. They'll push themselves to breaking point through the toughest challenges yet in a bid to save themselves from eviction.

Paranoia is setting in for the top six housemates as they fight for their lives in Second Chance Week.

With only two evictions left, the top five housemates are eyeing off the podium.

The heart-stopping end game is here as the final four battle it out. Who will make it to the final three ahead of the epic live grand finale?

All the housemates are reunited as host Sonia Kruger grills the final three on why they deserve Australia's vote, before the winner of the ultimate reality television title and $250,000 is announced.