O.B. is Back, with another Mini-Mystery He has an idea for his next gadget, but there's only one thing missing ... it's his phone Will he be able to complete his latest project without the phone? Grab your magnifying glasses, sleuth hats, imaginations, a sense of humor, and help O.B. solve this mini mystery
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.