Nancy Drew 40: the Moonstone Castle Mystery
Grosset & Dunlap 1962
Great fit for 5th grade
Reading level and content both target 4th–8th grade · ages 9–14
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Genre
Themes
- friendship
- courage
- resourcefulness
- perseverance
- justice
- family
- mystery
- problem-solving
About this book
When Nancy receives a mysterious moonstone from an unknown sender, she and her friends are drawn into a baffling case involving a missing teen and a looming, castlelike ruin by the river. Clues, secret messages, and eerie settings keep the trio sleuthing from one twist to the next. This classic Nancy Drew adventure is perfect for readers who enjoy fast-paced mysteries, smart problem-solving, and loyal friendship. It’s a solid pick for middle graders ready for chapter-book suspense without heavy scares.
Setting: Deep River, a small U.S. river town with a castlelike structure, mid-20th century
Frequently Asked Questions
Is Nancy Drew 40: the Moonstone Castle Mystery right for my child?
Yes — Nancy Drew 40: the Moonstone Castle Mystery is a great fit for 5th grade. The reading level is AR 5.3, which is typical for 5th grade. The interest level is rated Middle Grades (4–8), meaning the themes and content are designed for ages 9–14 (4th–8th grade). Themes include friendship, courage, resourcefulness.
How long does it take to read Nancy Drew 40: the Moonstone Castle Mystery?
At a typical 5th grade reading pace, Nancy Drew 40: the Moonstone Castle Mystery takes around 4.0h to finish. The book has 40,000 words. Slower or faster readers may vary significantly.
Does Nancy Drew 40: the Moonstone Castle Mystery have an AR quiz?
Yes — Nancy Drew 40: the Moonstone Castle Mystery has an AR quiz available, worth 5 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.
What grade level is Nancy Drew 40: the Moonstone Castle Mystery?
Nancy Drew 40: the Moonstone Castle Mystery has an AR reading level of 5.3, which places it at a 5th grade reading difficulty. The interest level is rated Middle Grades (4–8) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.