In reading order
Capital Mysteries #1: Who Cloned the President?
Ron Roy
Capital Mysteries #2: Kidnapped at the Capital
Ron Roy
Capital Mysteries #3: The Skeleton in the Smithsonian
Ron Roy
Capital Mysteries #4: A Spy in the White House
Ron Roy
Capital Mysteries #5: Who Broke Lincoln's Thumb?
Ron Roy
Capital Mysteries #6: Fireworks at the FBI
Ron Roy
Capital Mysteries #7: Trouble at the Treasury
Ron Roy
Capital Mysteries #8: Mystery at the Washington Monument
Ron Roy
Capital Mysteries #9: A Thief at the National Zoo
Ron Roy
Capital Mysteries #10: The Election-Day Disaster
Ron Roy
Capital Mysteries #11: The Secret at Jefferson's Mansion
Ron Roy
Capital Mysteries #12: The Ghost at Camp David
Ron Roy
Capital Mysteries #13: Trapped on the D.C. Train!
Ron Roy
Capital Mysteries #14: Turkey Trouble on the National Mall
Ron Roy