What is the Sword of Truth and why is it given to Richard?

Why does the villain Darken Raqhl want the three boxes of Orden?

If opened, one box of Orden kills the player, and one destroys the world. What does the third box do?

Richard has a secret that he keeps from Zedd and Kahlan. It is about something he memorized. What is the secret?

The Seeker of Truth has the power to question anyone, and punish them with death if they are guilty. Is such a power a good thing or a bad thing to have?

Why do Richard and Kahlan want to become members of the Mud People Tribe?

Richard is given many magical items that he does not use, like the tooth of a magical beast worn around his neck and a magical bird whistle. Do you think he might...