Capital Mysteries (2002–2012)
- Kidnapped at the Capital (2002)
- A Thief at the National Zoo (2009)
- Fireworks at the FBI (2009)
- Mystery at the Washington Monument (2009)
- The Secret at Jefferson's Mansion (2009)
- The Skeleton in the Smithsonian (2009)
- Trouble at the Treasury (2009)
- Who Broke Lincoln's Thumb? (2009)
- Who Cloned the President? (2009)
- The Election-Day Disaster (2010)
- The Ghost at Camp David (2010)
- Trapped on the D.C. Train! (2011)
- Turkey Trouble on the National Mall (2012)