America is in danger. The Shadow Syndicate is trying to take over and turn everyone into its slaves. The government is powerless. Luckily, four inventive boys can come to the rescue. Calling themselves Covert Shield Unit, and operating out of a backyard clubhouse, they invent weapons, traps, and gadgets to destroy the Syndicate and save the country.
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 $20. ThriftBooks.com. Read more. Spend less.