Masterpieces of Mystery In Four Volumes Riddle Stories

The riddle story is the most naïve form of the mystery story. It may contain a certain element of the supernatural—be tinged with mysticism—but its motive and the revelation thereof must be frankly materialistic—of the earth, earthy. In this respect it is very closely allied to the detective story. The model riddle story should be utterly mundane in motive—told in direct terms.