21 essays on various topics. The final section comprises "Studies in Sherlock Holmes". Sayers writes in her foreword: "The game of applying the methods of "Higher Criticism" to the Sherlock Holmes canon was begun, many years ago, by Monsignor Ronald Knox, with the aim of showing that, by those methods, one could disintegrate a modern classic as speciously as a certain school of critics have endeavoured to disintegrate the Bible. Since then, the thing has become a hobby among a select set of jesters here and in America. The rule of the game is that it must be played as solemnly as a county cricket match at Lord's: the slightest touch of extravagance or burlesque ruins the atmosphere".