The Trouble with Goats and Sheep by Joanna Cannon

It is hard to classify this book.  It is at its heart a mystery.  Mrs. Creasy is missing from this small English town.  It is hard to tell if the neighbors want her to be found because they share a secret they fear she will reveal.  But 10 year old Grace and her best friend Tilly are determined to solve her disappearance.  In the process, more question are raised.  Where does God live?  Is there a reason that many of the people on the block want to blame Walter, the eccentric loner at the end of the street?  Is the stain on the drainpipe really the face of Jesus?  Life is both simpler and more complicated through the eyes of these two children which give it a bit of a coming of age vibe.  It turns out there is more than one secret to be discovered.  It turns out humanity may have a very flawed method of identifying the sheep and the goats which makes this a very thoughtful mystery with an "Aha" ending.  If the mystery doesn't hook you, you can always see how many British sweet and British TV shows you are familiar with.