Capital Mysteries #8: Mystery at the Washington Monument

Late at night KC and Marshall are sleeping out on the White House lawn when they see suspicious lights flickering at the top of the Washington Monument. If that's not strange enough, the next day a monkey is found inside the building! KC and Marshall set off on a wild adventure to solve a 100-year-old mystery that involves a jewel thief, long-lost diamonds, and one of Washington's most famous and historic landmarks.

Ron Roy is the author of Random House's popular A to Z Mysteries. He lives in an old farmhouse in Connecticut with his white puppy, Pal.

Timothy Bush has many children's projects to his credit, including the elaborate visual extravaganza James in the House of Aunt Prudence and the super-funny Grunt, the Primitive Cave Boy. He lives in New York, New York.