A conversation with the Devil presents a fairly obvious literary temptation, especially perhaps to a Christian, but to anyone who plans to discuss the painful evil of the modern world, its false values or its misdirected aims, C. S. Lewis comes immediately to mind. He knew that the Devil himself would be difficult to catch, so very cleverly he avoided the problem by composing a series of letters from one of Hell's staff to a junior Tempter on his first assignment in the world…. [In Dialogues with the Devil] Miss Caldwell attempts something much more exacting, for she presents Lucifer himself, and, as though that were not problem enough, puts him into correspondence with the Archangel Michael. She is an experienced novelist, but it must be said that the two contestants use [styles that are] disconcertingly alike. Possibly it is because both are angels even though one of...