As the divide between right and left reaches new heights, one group is taking an extreme approach to politics; Lisa embeds deep in the Arizona desert preparing for threats; meets the family of a man who became a martyr for the movement.

Polygamy in America used to be known as something practiced solely in Mormon country; a growing crop of unorthodox dating websites puts a new spin on multiple marriage; Lisa meets open-minded singles, couples, and "throuples."