Brothers Max and Sam are off to New York to participate in an exciting medieval contest, the Knights of Knowledge, which will test their knowledge and their strengths. In order to find the golden key and win the contest and the prize, the boys must solve a series of riddles about landmarks -- A gift from the French and a symbol of freedom as well, she's as famous as Philadelphia's liberty bell -- located throughout the city. As they scurry along the streets of New York from one clue to the next, Max and Sam notice a couple of suspicious characters who seem to be following them around the city. When dusk draws near, the boys discover that a big city can be a frightening place and are stunned when they find out who these two characters are at the end of the hunt. These fast-paced, adventure books feature informative fact sheets that bracket the beginning and ending of each chapter to relay interesting statistics on the locale.