I liked how well the characters that were introduced for this issue were written! When compared with the Mystery in Paris it had a quite similar vibe, except that the plot twist was entirely different this time!!
(spoiler)
Basically, the sisters (with Marco and Elisa) had sworn to know about the theif's whereabouts but Marco and Eliza's dad seemed to dust it off because they were not professionals, but when they finally caught the thief, even their dad came and had faith in them all along!
I really like how the thief doesn't get an immediate redemption just because he feels that his ancestor was not treated well by the city he's in right then, but I wish we got to see more of him because he's AWFULLY DRAMATIC and he's also drawn in only one mood in the three illustrations (and YET manages to slay in ALL OF THEM)...and also he's cute