Read how Mr. Jellysox got his strange name, how Billy gets into a lot of trouble at school but how M, his invisible emu, helps him to get out of a tricky situation involving a large beaker of water and some unpleasant Sixth Formers. Also see how M spooks the culprits. Moreover, who is the Sixth Musketeer? Olivia takes on the role as Olivier, and as Colin's trainee musketeer defeats the second best swordsman in the whole of France. Finally on a speeding express train Olivia and Colin prevent Princess Katrina and her brother Peter from being kidnapped, whilst Colin and M divert the train elsewhere. As expected, in every story in which he appears M never misses a chance to produce his own brand of comical antics.