Big Brother (season 5)

Big Brother 5 is the fifth season of the reality television series Big Brother. It ran from July 6, 2004 until September 21, 2003.

The format of the program remained largely unchanged from previous seasons: a group of contestants, referred to as HouseGuests, are enclosed in the Big Brother House under the surveillance of cameras and microphones. Each week, the HouseGuests vote to evict one of their own until two Houseguests remain on finale night. The winner will be decided by the last seven evicted HouseGuests, collectively known as the Big Brother Jury.

The twist this season was the Project Do Not Assume, or Project DNA twist. One housemate - Rachel Dickerson - was actually a set of twins named Rachel and Ashley competing as one. If both twins made it through four rounds of elimination, both would compete in the game as individuals.

This season was preceded by Season 4 and followed by Season 6 on July 7, 2005.