Robyn's baby is due NOW, and she's worried about the possibility of a breached birth. She and Kody go for one more ultrasound to check on Baby Sister- meanwhile one of the oldest daughters, Madison, goes to be fitted for her wedding gown.

It's usually all about the Sister Wives, but this week all four wives turn their focus on Kody and reveal some of his biggest secrets. They open up about why he became a polygamist and what he was thinking when he agreed to go public with his illegal life