This has been on my TBR list forever, and I finally got around to reading it. Flavia was weirdly adult in a way that I wasn‘t expecting. I guess I should have, since the premise is an 11-year-old who solves mysteries. She *is* an accurate picture of a gifted kid who‘s been left alone a lot to pursue her advanced interest (chemistry). The philatelic storyline interested me. Overall, 3.5 stars. I‘m interested to read a few more in the series.