MECHANISMS OF DETECTION

“The traditional elements of the detective story are: (1) the seemingly perfect crime; (2) the wrongly accused suspect at whom circumstantial evidence points; (3) the bungling of dim-witted police; (4) the greater powers of observation and superior mind of the detective; and (5) the startling and unexpected denouement, in which the detective reveals how the identity of the culprit was ascertained. Detective stories frequently operate on the principle that superficially convincing evidence is ultimately irrelevant. Usually it is also axiomatic that the clues from which a logical solution to the problem can be reached be fairly presented to the reader at exactly the same time that the sleuth receives them and that the sleuth deduce the solution to the puzzle from a logical interpretation of these clues.”