Stone of Tears

The Sword of Truth series follows Richard Cypher, a young woodsman intent on tracking down his father's murderer. His quest will take him far from home, embroiling him in an ancient war, three-millennia past, that is about to re-ignite with world-shattering violence.
'The greatest harm can result from the best intentions.' Richard Cypher and Kahlan Amnell ignore Wizard's Second Rule at their peril.
Richard Cypher's battle with Darken Rahl has torn the veil that separates the world of the living from the Underworld, freeing the Keeper's minions to stalk the land. To repair the veil, Richard will be forced to confront the true and deadly nature of his inheritance and Kahlan will be forced to betray the man she loves.
Alone with the terrible truth of what she has done, Kahlan must forge an army and battle a new threat that is even now scouring the land, determined to eradicate the corrupting taint of magic once and for all. But even that may be easier than winning back the heart of the man she loves.