HOLY TWIN SWITCHEROO!

In yet another BIG BROTHER 5 twist, Adria reveals that she has been swapping in and out of the house with her twin sister, Natalie. We meet Natalie, who is physically identical to Adria save for a few tiny facial characteristics--the size of a mole, a small facial scar--and learn about their dynamic deed of deception. Natalie and Adria explain how they have only 15 minutes to perform the switch, and then we get to see them switching in and out of the House at various times of day. When Julie asks how they do it, they answer, "Different disguises, lots of hats and glasses."

Highlighting how stressful the situation can be, we see live how the twins make the switch. Prior to this show, the twins were given 15 minutes to download information. Then in tonight's live show, they have only one minute before Adria must return to the game while Natalie goes into sequestered seclusion.

If they make it through the first five weeks without getting kicked out, both twins enter the game. Will they last, or will they be discovered? What will Marvin do with his newfound power? How will he react to the Spy Screen in the HOH bedroom?

Find out in the weeks to come on Big Brother 5.