Chainfire

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. Kahlan is missing. Worse than that she's vanished, from the world, from memory, from the books of prophecy. After being gravely injured in battle, Richard awakes to discover Kahlan has vanished... from the world, from memory and from the books of prophecy. To his disbelief, no one remembers the woman he is frantically trying to find they refuse to believe she is anything more than a delusion born of his injuries. Alone as never before, believed mad, stalked by a nightmare beast conjured by the Sisters of the Dark, Richard sets out to find the woman he loves more than life itself... If she is still alive. If she was ever real.