Unless you were born after 1996, you know Kato Kaelin. In the Year of Our Lord 1994, Kato Kaelin was famous. Hot. Headlines. Front page. In everyone’s mouth. On everybody’s lips. TV, radio, newspapers. Kindergarten kids crayonned his name. More mentions of Kato and lawyer Kardashian than today’s mentions of Kanye and Kardashian’s kid Kim. He was a star of O.J. Simpson’s trial for killing his wife, Nicole. At their house that night, he saw, he heard. He knew who, what and where. The prosecution labeled Kaelin a hostile witness. Unemployed, a freeloader, did he tell the truth then? The...