"The Innocent" is the first volume in a projected trilogy (at least!) that, like Russian dolls, is a coming-of-age novel nested in a cultural critique nested in a thriller nested in a mystery. Todd Baker, a Vietnam vet and war hero, lawyer, vice-presidential candidate and all around American alpha dog, has done something naughty enough to land in a maximum-security psych facility and cause the Supreme Court to postpone the national election. He's...