It's the first show of a new BIG BROTHER season, and this year's theme is Do Not Assume.

Michael decides to reveal to the Four Horsemen that Jennifer, a.k.a. Nakomis, is his half-sister.

The noose continues to tighten around Mike's neck as Scott wins the Power of the Veto in the "Flaringo" ring toss game.

Despite his best efforts to plant seeds of doubt about the power of the Scott and Jase alliance, a houseguest gets evicted.

Nomination day arrives, and Head of Household Marvin begins his deliberations.

In a riveting competition called "Snag the Veto", Jase emerges victorious over a hard-working Lori to grab the Power of Veto.

Jase's decision to use the Golden Power of Veto on Holly proves to be a good thing for Marvin and the rest of the Four Horsemen.

As soon as Drew wins Head of Household, he finds himself being barraged by advice, counsel, and commentary by every single player in the game.

Nakomis (Jennifer) wins the Power of Veto, and she removes herself from the chopping block.

After being spied on, Holly is evicted by a near-unanimous vote of 7 to 1.

The new Head of Household, Diane, attempts to get rid of a power player in the house by nominating Jase and Scott for eviction.

Jase and Scott compete for the power of veto to try and get themselves off the block.

Fourth live eviction.

Following Scott's eviction, the "Twin Twist" was revealed to the HouseGuests and Natalie officially entered the game. Nakomis wins the head of household competition. While planning for nominations, Nakomis realizes that her alliance now has the numbers to complete the "Six Finger Plan".

Drew wins Power of Veto completing the Six Finger Plan; Jase is nominated for eviction.

Thinking he saved himself, Jase gets bounced by a near-unanimous vote.

The united alliance that evicted Jase from the House appears to be crumbling.

Will and Marvin, nominated for eviction, compete for the Power of Veto.

Drama ensues during the eviction ceremony.

Nakomis puts not one but two twins on the block, seemingly ensuring that one of them will be leaving.

After one of the stranger Power of Veto ceremonies, a family member is betrayed.

Houseguests make a promise that Will will be avenged.

Out of allegiance to Will and a desire to get a strong player out of the Big Brother 5 House, two houseguests are thrown up on the block.

Adria, almost positive that she will be evicted during the ceremony, gives all of the remaining houseguests a piece of her mind.

Following Adria's eviction, the house learned it would be a Double Eviction Week, and that someone else would be leaving the following day. Drew then won the HOH competition and chose to nominate Diane and Marvin for eviction due to a disagreement he had had with both the nominees.

Nakomis immediately gets her game on, knowing she will need to be sharp if she wants to stay in game.

Will Diane's betrayal cost Karen the game? Or is Cowboy heading for an ambush?

The last chance for Nakomis will be the Veto competition.

Cowboy becomes Head of Household; Nakomis is evicted.

The Final HOH is played, Diane is evicted.

The winner of Big Brother 5 is selected.