Capital Mysteries #7: Trouble at the Treasury

In the seventh book of the Capital Mysteries—an early reader chapter book mystery series featuring fun facts and famous sites from Washington, D.C.—KC and Marshall are thrilled to take a tour of the United States Treasury, where stacks and stacks of money zip off the presses in the printing and engraving building, millions of dollars a day. But the friends find that a bundle of bills is missing. That's a hundred thousand dollars--gone! How did the thief slip the money out past cameras, guards, and locked doors? KC has a suspect. She has a clue. Now she just needs to figure out how in the world it was done.