content: Thought I'd read all of Dorothy Sayers' mysteries years ago, but never got around to this one before; turns out I hadn't missed anything all that time. Not a Lord Peter Wimsey story, but does take place in the same universe -- there's a minor character who's also a minor character in the Lord Peter corpus, and I think there was a throwaway line in a Lord Peter story referring to this murder.It's a gimmick book: it's not presented as a traditional 3rd-person narrative but as a collection of personal letters, newspaper articles, memoranda, and sworn statements. The gimmick is cute, but not successful: too much of the book (especially in the second half) is carried by the sworn statements, which are sufficiently story-telling to make it mostly a 1st-person story (albeit told from a couple different 1st-person points of view). And as a mystery it's very lightweight, and too broadly given away.