Federal public defender Steven Wax says the U.S. government has ways of making a person disappear. He tells the frightening stories of two men who got caught up in post-9/11 counterterrorism measures. Also: Peter Matthiessen on his new novel. Ian Frazier’s latest collection of humorous essays. And find out how Muqtada Al-Sadr became the leader of Iraq's poor Shi'ites and the resistance to the occupation.