Masking his voice and dressed in a disguise, the assassin carried out his orders. He murdered two Supreme Court judges, and escaped without a trace. No one in Washington could figure out who would kill these two respected men. It took a graduate student from Tulane to change the question from whom to why for the case to be solved. The student named Darby Shaw realized both judges were complete opposites on the political spectrum, except in issues involving the environment. They were both strong supporters of environmental conservation. S ....