This collection includes three vintage hardcover books from the beloved Nancy Drew series. The first book, titled "Moonstone Castle", is from the 1950s and features a captivating storyline that will keep readers on the edge of their seats. The second book, "Hidden Staircase", is from the 1990s and is a perfect addition to any collector's shelf. Finally, "Nancy Drew's Detective Work" is a must-have for fans of the series and collectors alike. All books are in great shape and ready to be enjoyed.