Phantom (Sword of Truth Series #10)

On the day she awoke remembering nothing but her name, Kahlan Amnell became the most dangerous woman alive. For everyone else, that was the day that the world began to end.

As her husband, Richard, desperately searches for his beloved, whom only he remembers, he knows that if she doesn't soon discover who she really is, she will unwittingly become the instrument that will unleash annihilation. But Kahlan learns that if she ever were to unlock the truth of her lost identity, then evil it…