'Big Brother 17': So Many Twins, So Little Time [Photos]

Sarah Field

Big Brother victory is achieved through alliances, competition, prowess, and lies. Fans of Big Brother 17 know that at least one houseguest is carrying on a significant ruse. That houseguest is actually a set of twins, playing as one person. If they can make it through five evictions, they enter the house as individual players.

Big Brother announced the twist as part of the two-part premiere last week. The show has not disclosed which of the players is swapping out with her sibling. Bloggers have deduced it must be Liz Nolan, who sometimes models with her twin sister Julia. Fans were quick to point out that Liz and Julia don't look exactly alike, although they are very similar.

But is it Liz and Julia?

Shelli Poole told the houseguests she has a fraternal twin brother. No one in the house questioned whether she was telling the truth. This week, a Shelli Poole fan Twitter account posted what appears to be a family photo.

— Shelli Poole #BB17 (@ShelliPooleBB17) July 1, 2015

But the conspiracy theorists are probably wrong. The fan Twitter account answered its own trivia question with a throwback picture of Shelli and her twin brother Wes.

— Shelli Poole #BB17 (@ShelliPooleBB17) July 2, 2015

"My fraternal twin brother eweldon88 has been not only a brother but a best friend that has been one of the few people who I've been able to count on my entire life."

That leaves Liz and Julia, who many have assumed are the pair making the swap.

This week, CBS should finally reveal to home viewers just who is involved in the twin twist. From that point on, Big Brother watchers will be squinting at the screen, trying to figure out which twin is playing the game at any one time.

Big Brother is broadcast Wednesday, Thursday, and Sunday nights.

[Main images: CBS]

[Updated July 1, 2015 6:23 pm PT]