"Ruthie thinks nothing exciting will ever happen to her until her sixth-grade class visits the Art Institute of Chicago, where she and her best friend Jack discover a magic key that shrinks them to the size of gerbils and allows them to explore the Thorne Rooms--the collection of sixty-eight miniature rooms from various time periods and places--and discover their secrets--Résumé de l'éditeur."
"Ruthie thinks nothing exciting will ever happen to her until her sixth-grade class visits the Art Institute of Chicago, where she and her best friend Jack discover a magic key that shrinks them to the size of gerbils and allows them to explore the Thorne Rooms--the collection of sixty-eight miniature rooms from various time periods and places--and discover their secrets."@en
"Ruthie thinks nothing exciting will ever happen to her until her sixth-grade class visits the Art Institute of Chicago, where she and her best friend Jack discover a magic key that shrinks them to the size of gerbils and allows them to explore the Thorne Rooms--the collection of sixty-eight miniature rooms from various time periods and places--and discover their secrets."