In the eighth book of the Capital Mysteries--an early chapter book mystery series featuring fun facts and famous sites from Washington, D.C.--it's summertime, and KC and Marshall are camping out on the White House lawn. But late at night, they spot mysterious lights flickering at the top of the Washington Monument. When they go to check it out, they find something even stranger - peanut shells, a broken stone, and a monkey. One thing is sure, this is KC and Marshall's weirdest mystery yet!

Each book highlights one of the famous museums, buildings, or monuments from the Washington area and includes a map and a two-page fun fact spread with photographs. Parents, teachers, and librarians agree that these highly collectible chapter books are perfect for emerging readers and any kid who love mysteries!