Eighteenth album of the comic book series Spirou et Fantasio, by André Franquin (drawing) and Greg (writer). The version published in the newspaper Spirou is longer than the version published in album. This difference between the two versions is caused by the refusal of the original script by the publisher Charles Dupuis. Franquin must resume his narrative at zero, but the story has already begun to appear in the newspaper. Franquin then appeals to Greg...