From Edgar Award-nominated author Martha Freeman comes a "delightful" (Kirkus Reviews) middle grade mystery following a young boy working at his family's secondhand store that is a steal-your-heart story about family and friendship. Arthur Popper helps out in his family's Boulder, Colorado, junk store, Universal Trash, a place so full of cool stuff it inspires awe in first-time shoppers. When it comes to ukuleles, peppermills,...