Maybe because I don’t really care about stamps and all that, and practically the whole book is about stamps.
I also didn’t really like the main character, maybe because she was such a know-it-all character and I tend to dislike those, especially if they act like how she did.
Also I noticed some spelling/grammar mistakes, while a lot was good British-English, there were some parts that had the wrong spelling/grammar. Favorite? Color? Nope.
In overall a fun book, if you like murder, a little girl and lots of stamps.