This is a scene from the second Sister Wives Tell All 2 special. It takes us behind the scenes of the TLC hit.

The Browns start to wonder if the commitment ceremony will actually happen on Sister Wives.

Meri and Kody Brown are married. She is one of his Sister Wives.

As the Brown family makes plans for their commitment ceremony, another tragedy strikes on Sister Wives.

There's a health crisis here on Sister Wives. Truely is really sick.

When Truely is rushed to the hospital, Mariah's farewell party may have to be postponed on Sister Wives.

The Sister Wives have a whole lot of children. This is a photo from Season 4 of the series.

Kody stays home with their 17 kids as the wives go shopping on Sister Wives. "While the Wives are Away" is the 15th episode of the show's fourth seaosn.

It's time for a polygamist dance party! This actually goes down on Sister Wives Season 4.

How will the wives handle it when a psychic predicts a fifth wife in Kody's future on Sister Wives?

How will the wives react to Kody's new romance on Sister Wives?

Kody and his wives sit around in this Season 4 finale scene and answer questions from fans.