Blue paperback mystery novel with red bookmark

I lost my blue paperback mystery novel yesterday around 3pm near the Barclays Bank on High Street in Winchester. It’s a HarperCollins paperback edition with a red ribbon bookmark peeking out of page 213 and a small coffee stain on the back cover. The cover is slightly curled from rain, and there’s a tiny dent on the top edge. It was a gift from my aunt and has sentimental value; I really need it back. If anyone found it, please get in touch—I’d be grateful to reclaim it.