The two main characters are a 61 year old police chief with a bad back and her 87 old mother who lives with her.
I scooped this review on the net and it puts my thoughts into words so well I just couldn't improve upon it.
But the really interesting thing about this book is that it was penned by a famous male author under the above pseudonym and I would never have found out about either of these if I hadn't listened to Writers and Company on CBC.
I won't disclose his name here but a quick web search will do it for you if you're so inclined.
It's such a joy to find books that are unashamedly Canadian (the story is based in small town Ontario) and also so unremittingly good. And are about older people doing their jobs, with interesting backstories: broken marriages, remote adult children, etc.
I love a good yarn. And bonus, a yarn behind the yarn.