Another popular one could be 'A Red Herring Without Mustard'. It builds on the world established in the first book. There are more complex mysteries and Flavia's relationships with the other characters in the village start to develop in more interesting ways.
It's about a man who ends up on an island where Dr. Moreau is conducting strange and unethical experiments on animals, blurring the lines between human and beast.
I'm not very familiar with Matt Moreau in the context of non - erotic literature. He may be an emerging or relatively unknown author in non - erotic genres. It could be that he is working on different types of stories like those focused on human relationships or self - discovery outside of the erotic realm.
Sure. One of the well - known Flavia de Luce novels is 'The Sweetness at the Bottom of the Pie'. It's a great start to get into the series as it introduces the character Flavia and her unique, inquisitive nature. Another one is 'A Red Herring Without Mustard' which continues Flavia's adventures in her little English village, full of mystery and her signature sleuthing.