Kody Brown's family life -- he has four wives and 17 children -- may seem unconventional to many, but up until a few years ago, it was also illegal in the Browns' home state of Utah. For years, Kody and his wives, Meri, Janelle, Christine and Robyn, lived quietly as polygamists at first, but when the Brown family agreed to star in a reality show on TLC called "Sister Wives," the secret was out. Soon, police in Utah launched an investigation into the Brown family.