A brand new change for Peter! He's out of London and has no Nightingale to cover up his back during the meeting with some bad big muscular princesses Lunas poking around and some other crazy fairy stuff. 
 I admired how Peter shines as a character being left alone in the magic field. He definitely grew up to be more self-confident and skilled. And he has a girlfriend worthy his magical self. Yay! 
 Also it was cool to know more about the mysterious Ettersberg and to my joy there are still enough mysteries left for other books, though I missed a really great villain - The Faceless Man and of course my favorite complaint all the time due to Mr. Aaronovitch books: Not enough of Nightingale and Molly. I wanted more as usual. 
 The story in this book is really well written, it was gripping, interesting and a real page turner for me. I loved the new characters. They shone with shrewd simplicity as really good examples of their profession/lifestyle. Oh and I loved how Mr. Aaronovitch made the clues not obvious. Sometimes I was clueless and it made joy for me to try to crack the mystery. The place was also so different from the Peter Grant's London, which I began to get used to. The story fits the countryside perfectly, because countryside is a code name for creepy secrets in its peace and quiet. 
 I'm a little bit disappointed that the author didn't use Hugh Oswald and his grand-daughter more. I would like to meet them in the future books. 
 I swallowed "Foxglove Summer" in two days and immediately wanted more.