. . "Mystery and detective stories." . . "JUVENILE FICTION Mysteries & Detective Stories." . . "JUVENILE FICTION / Mysteries & Detective Stories" . "Orphans." . . "Boxcar children (Fictitious characters) Juvenile fiction." . . "Romans policiers." . . "Mystery fiction" . "Mystery fiction"@en . "The Alden children know there's a mystery to solve in Washington, D.C. when things start disappearing from their hotel, and they realize they are being followed."@en . . . . . . "The Alden children suspect that the other guests are somehow involved when things begin to disappear at the bed and breakfast where they are staying in Washington, D.C."@en . "The Alden children suspect that the other guests are somehow involved when things begin to disappear at the bed and breakfast where they are staying in Washington, D.C." . . . "The mystery in Washington, DC" . "The mystery in Washington, DC"@en . . . . "The Mystery in Washington, D.C"@en . "The Mystery in Washington, D.C" . . . . . . . . . . . . . . "Electronic books"@en . "Electronic books" . . "The mystery in Washington, D.C : Boxcar Children special #2"@en . "The mystery in Washington, D.C" . "The mystery in Washington, D.C"@en . "Juvenile works" . "Juvenile works"@en . . . . . . . . . . . "The mystery in Washington, DC : The boxcar children special #2" . . . . . . . . "Fiction"@en . "Fiction" . . . . . "Mystery in Washington"@en . "<DIV>The Aldens are going on a trip to Washington, D.C. They visit lots of interesting places, like the Capitol Building, the Washington Monument, and the Air and Space Museum. But when things start disappearing from their hotel, they realize they are being followed, the children know there's a mystery in the capital ... and it's up to them to solve it!</div>"@en . . . "Families Juvenile fiction." . . "Families." . . "Washington (D.C.)" . . "Boxcar children (Fictitious characters)" . . "Orphans Juvenile fiction." . . "Livres-jeux." . .