27 of 28 people found the following review helpful
Mary Pope Osborne's the Mystery of the Ancient Riddles: Books 9-12,
This review is from: Magic Tree House Boxed Set, Books 9-12: Dolphins at Daybreak, Ghost Town at Sundown, Lions at Lunchtime, and Polar Bears Past Bedtime (Paperback)
This is one of my 3 favorite sets of Magic Tree House series books although I have only read books 1-28. I teach Sunday School and babysit and they are a big hit with the kids-especially those ages 5-8. I liked the books so much that I bought some extras for the kids at the homeless shelter. This set takes the two kids to search for answers to riddles. Always the 4th book of each set ties together what was discovered in each of the 4 books. The books put in bits of non-fiction along with fiction. Plus, this 4 book set comes with 8 trading cards, which include quiz questions and information on some of the books. I think that in these four books, the kids (Jack and Annie) went to someplace very cold, met some dolphins, toured a ghost town, and went to another place with wildlife and trees and water (I read these books a number of months ago). I highly recommend this set. By the way, my other favorite series of 4 books are 13-16 and 21-24. Oh, I am a college student and do not have kids yet, but have taught for many years.