Blue hardcover mystery with orange bookmark

I lost my blue hardcover mystery novel yesterday around 3pm near the Concord Public Library on Main Street in Concord, NH. It's a Penguin Random House edition with an orange ribbon bookmark peeking out from page 218, and there are a couple of dog-eared pages around chapter 7. The back cover has a small coffee ring stain and a tiny dent on the top-right corner. This book has sentimental value—it's a gift from my grandmother that I really treasure. If you spot it, drop me a message through this app and we can arrange a meetup to return it.