Capital Mysteries
1 Who Cloned the President? (2000)
2 Kidnapped At the Capital (2002)
3 The Skeleton in the Smithsonian (2003)
4 A Spy in the White House (2004)
5 Who Broke Lincoln's Thumb? (2005)
6 Fireworks At the FBI (2006)
7 Trouble At the Treasury (2006)
8 Mystery At the Washington Monument (2007)
9 A Thief At the National Zoo (2007)
10 The Election-day Disaster (2008)
11 The Secret At Jefferson's Mansion (2009)
12 The Ghost at Camp David (2010)
13 Trapped on the D.C. Train! (2011)
14 Turkey Trouble on the National Mall (2012)
2 Kidnapped At the Capital (2002)
3 The Skeleton in the Smithsonian (2003)
4 A Spy in the White House (2004)
5 Who Broke Lincoln's Thumb? (2005)
6 Fireworks At the FBI (2006)
7 Trouble At the Treasury (2006)
8 Mystery At the Washington Monument (2007)
9 A Thief At the National Zoo (2007)
10 The Election-day Disaster (2008)
11 The Secret At Jefferson's Mansion (2009)
12 The Ghost at Camp David (2010)
13 Trapped on the D.C. Train! (2011)
14 Turkey Trouble on the National Mall (2012)
