Big Brother (season 4)

Big Brother 4 is the fourth season of the reality television series Big Brother. It ran from July 8, 2003 until September 24, 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 Ex-Factor twist. Ten of the thirteen HouseGuests had somebody in the house whom they previously were in a relationship with.

The winner of this season was 40-year-old Laura Schilke of Waukegan, Illinois.

This season was preceded by Season 3 and followed by Season 5 on July 6, 2004.