I love this series and I loved this book.
I, too, like some other reviewers have a little crush on Albert Campion. He is very smart but he seems human while still being mysterious in some ways if that is possible.
Lugg is hysterically funny, in this book more than usual, when he takes the daughter of one of the suspects under his wing. Their interactions are priceless.
I don't really read these for the mystery, per se, but for the atmosphere and the characters. I almost never guess the murderer, either.