Things have changed with this fourth instalment of The Four Just Men (FJM). It is a collection of short stories, rather than one longer narrative. No fourth man is recruited to assist, and Poiccart is content to remain in Spain growing onions and breeding pigs. Solving cases is left to the remaining two, George Manfred and Leon Gonsalez. Indeed it is Gonsalez who "retains the youthful enthusiasm" for their cases, while Manfred is content to sit back and wryly observe his partner's schemes, helping out as Leon directs him. It's 1921 and we're at the dawn of the golden age of murder mysteries, so the stories do have this flavour, although the two Just Men are more like a pair of Sherlock Holmes as they apply reason, deduction and a little pseudo science to come up with the ingenious plots to trap all the miscreants who have thus far escaped justice.
None of the villains are threat to national security. Now Gonsalez and Manfred are mainly helping ordinary people, or at least well-heeled middle class people mainly, to get justice. But it's always enjoyable to see their ingenuity! :)