annie(fictitiouscharacter:osborne) brothersandsisters cabañasenlosárboles children'sfiction espadas ficciónjuvenil fiction hermanos jack(fictitiouscharacter:osborne) juvenilefiction magia magic newyorktimesbestseller nyt:series_books=2007-03-10 selkies siblings spanishlanguagematerials swords timetravel treehouses viajeatravésdeltiempo wizards