Blue paperback Dune with yellow bookmark

I lost my blue paperback copy of Dune by Frank Herbert yesterday around 3pm. It’s a mass-market edition with a slightly creased spine and a blue cover—the back has a tiny red sticker with the number 412. A yellow bookmark sticks out about two chapters in, and I’ve got my initials 'PP' written in pencil on the title page. It was a gift from my grandmother, so it really means a lot to me. I’m hoping someone who picked it up near the Walmart on Poleline Road in Twin Falls can return it. If you found it, I’d be grateful to get it back via this app or at the Twin Falls Police Department.