The second season of the Australian reality television series, Big Brother, also known as Big Brother 2002, started on 8 April 2002, and ended on 1 July 2002, lasting 86 days. This season was similar to the first season, and was the only one to use the same house from a previous season, albeit with some small modifications. Simultaneous with the main house was a house of six potential Intruders. A number of television specials allowed viewers to get to know the intruders and viewers were able to vote which three eventually went into the house.
A close relationship formed between Nathan Martin and Jess Hardy (Marty and Jess) who later got married after leaving the show. Their wedding plans and the ceremony were showcased in television special Marty & Jess: An Outback Wedding. The couple divorced in 2006. The Australian rock band Killing Heidi entered the house for a special surprise birthday party for Jess. During an Eviction, a 25-year-old male ran naked onto the stage and was subsequently fined $100 in court. The reserved Peter Corbett won the $250,000 first prize, with Marty coming second.
Of the Housemates, Jess Hardy previously featured on The Mole 2 and was eliminated in the qualification challenge to determine the main cast.
The following three contestants were potential housemates. They lived in an Intruder House along with Nicole, Brodie and Keiran, and were not voted in to the Big Brother house by Australia after a month.
<onlyinclude>
Color key:
In addition to the pre season special, a number of special episodes also aired during the original run of the season. These included:
Aired the same night as the Launch show, the Intruders special revealed the six possible intruders: Hayley, Kieran, Brodie, Nicki, Nicole and Will. Gretel explained that the public will decide which intruders will enter the Big Brother house. Psychologist Carmel Hill provided insight into the personalities of the intruders.
One week after the launch, Gretel presents a program in anticipation of the first round of nominations the following night. Packages are shown exploring the impact of different platonic and romantic relationships in the House, with added comments from Daily Show supervising producer Chris Blackburn. First season winner Ben Williams and psychologist Carmel Hill analyse potential nomination strategies.
After nearly four weeks living in the secret intruder house, it is time for the public to vote on which three intruders will enter the main Big Brother house. Viewers are shown the secret intruder house for the first time and how the intruders are adjusting to life together, and also to no communication from the outside world.
Gretel hosts a live special in which the results of the intruder vote are revealed and the intruders are released into the house. Psychologist Carmel Hill is on hand to analyse the impact of arrivals. Also, one housemate asks for permission to leave the house.
Gretel hosts a live special in which the original Housemates must vote to evict one of the three Intruders. Each Housemate is given one minute to make a case for the Intruder(s) they want to keep, then each Intruder is given an opportunity to state their case, before the Housemates cast their votes.
Gretel drops in on the house in a live special to host a series of challenges for the Final 5 Housemates to raise up to $50,000 for their chosen charities. Before the final challenge, Mastercard surprised the Housemates with a personal cash prize split between the 5, equal to the amount raised for their charities.
With three housemates remaining and no Nominations to cast, Gretel is joined by Psychologist Carmel Hill, Big Brother 2001 finalists, Sara-Marie, Blar and Ben, as well as evicted housemates Shannon & Nathan and the most recent evictee Jess to discuss the Final 3 ahead of their final week in the house.