A call on the hotline takes the Mystery Math Squad to a construction site. According to Paul Parker, their project is at a standstill because the area is haunted. Addie, Linus, Trixie and Devon have... This description may be from another edition of this product.
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.