Many years before some members of the Detection Club claimed the concept of "fair play" as an innovation of their own and as something diametrically opposed to thrillers (whose unchallenged master was Edgar Wallace), E.W. set out a locked room mystery within a thriller framework, giving the readers all the necessary clues to solve the enigma by themselves. Wallace wrote it burdened with debts. Simultaneously, Jacques Futrelle undertake a similar task with his short story "The Problem of Cell 13" ... Both writers offered a cash prize to those readers who were clever enough to solve the respective enigmas. Jacques Futrelle's story is very clever and entertaining, but his characters are childish caricatures. The plot of 'The Four Just Men' is a concatenation of episodes which essentially could be summarized as a novella, but the dynamism, sparkling wit and subtle humour of the narrative make the book quite readable today. Some skeptical minds found the solution technically unfeasible, but an unfortunate event that took place a short time after the book publication (1905) forced them to admit their crass mistake: a man was prosecuted in Brazil for a murder committed with the same modus operandi as the one used in the assassination imagined by Wallace. It's a realistic solution, too clever to seem real, too simple to seem clever. That's the basic difference between the simplicity of the genius and the abstruseness of the willing worker. Most of the impossible crime mysteries are just that: impossible. Impossible to commit, impossible to believe and, in quite a few cases, impossible to read. They are bookish and far-fetched. Their solutions are full of providential coincidences, and their complex detection, veneered of intellectualism, is just a waffle to hide the mediocrity of the solution. That's not the case with Edgar Wallace. He was not intellectual; he didn't need it: he was a genius. He demonstrated it in real life...
Juan Santisteban, BA in English Studies from the University of Salamanca, Spanish translator and editor of the "Colección Edgar Wallace".