"Mystery Fiction." . . "The Deserted Library Mystery #21 : the Boxcar Children Mysteries"@en . . . . . "Mystery fiction" . . "The deserted library mystery / Boxcar #21"@en . . . "The Boxcar Children find a new adventure at the library, someone is trying to destroy it and they need to figure out who."@en . . . "At an old library, the Alden children discover a boy who needs their help and a stranger who is after a valuable object they found in the library."@en . . "At an old library, the Alden children discover a boy who needs their help and a stranger who is after a valuable object they found in the library." . . . . . . . . . . . . . "Juvenile works" . "Juvenile works"@en . . . . . . . . . "Electronic books"@en . . . "Electronic books" . . . . . . . . . "Misteri i bibliotekes se braktisur" . . "The Deserted Library Mystery" . . . "Boxcar children" . "Fiction"@en . "Fiction" . . . . "Deserted Library Mystery"@en . . "Boxcar children #21"@en . "The deserted library mystery (Boxcar Children #21)"@en . . "The deserted library mystery" . "The deserted library mystery"@en . . "Orphans Juvenile fiction." . . "Libraries Fiction." . . "Boxcar children (Fictitious characters) Juvenile fiction." . . "Families Juvenile fiction." . . "Detective and mystery stories." . . "Orphans." . . "Bibliothèques Romans." . . "JUVENILE FICTION / General" . . "Boxcar children (Fictitious characters)" . . "JUVENILE FICTION / Mysteries & Detective Stories" . . "JUVENILE FICTION Mysteries & Detective Stories." . "Families." . . . .