Centered on an elderly retiree and his intellectual adversary, the shrewd Inspector Lebeda, <em>Case Closed</em> is filled with all the expected elements of a thriller--murder, rape, suicide!--but soon reveals itself as a wily and sophisticated parable about the dangers of language itself, in which the author takes aim at human nature with a devastating arsenal of genre-mixing, wordplay, and whimsical, biting satire.