Arsène Lupin, Super-Sleuth by Maurice Leblanc

For the rest of the week, not knowing where to renew the struggle, Ralph read very carefully the reports in the newspapers describing the triple murder on the express. There is no point in treating at full length events which have become stale in the public mind, or the theories that were advanced, or the mistakes that were made, or the clues that were followed. This affair, which has remained such a profound mystery and which at the time excited the extravagant interest of the whole world, is of no interest to-day except by reason of the part that Arsène Lupin played in it and of the degree in which he helped to bring about the discovery of the truth which we are at last able to establish with absolute certainty. There is no point therefore in bothering about trivial details and in throwing light on facts of secondary importance.

Moreover Ralph perceived quickly enough the limits within which the results of the enquiry were confined and he made a careful note of them in order to classify the facts, to select those of importance, and to eliminate those of no importance.