Capital Mysteries #10: The Election-Day Disaster Capital Mysteries #11: The Secret at Jefferson's Mansion Capital Mysteries #12: The Ghost at Camp David Capital Mysteries #13: Trapped on the D.C. Train! Capital Mysteries #3: The Skeleton in the Smithsonian Capital Mysteries #4: A Spy in the White House Capital Mysteries #5: Who Broke Lincoln's Thumb? Capital Mysteries #6: Fireworks at the FBI Capital Mysteries #7: Trouble at the Treasury Capital Mysteries #8: Mystery at the Washington Monument Capital Mysteries #9: A Thief at the National Zoo Capital Mysteries #14: Turkey Trouble on the National Mall
