The best bet on a book of this sort is to put it with the game books -- or to send it with a package of mysteries, ""on spec"" to your mystery fans. For it is definitely directed to the addict --each group of questions keyed to those with a thorough grounding in the mystery field, not only literary, but factual and theoretical. Although not set up with directions for playing as a game, it could be worked out that way, and some system for scoring devised.