The Mystery of the Other Girl By St. John, Wylly Folk Books / Hardcover Books ISBN: 0670502936 / Publisher: Viking Juvenile, April 1971 Price Starting at $20.04 Free Shipping Send to a friend Add to Wishlist Below is a list of products arranged by condition. Select the quantity of the product you desire and click the "Add" button. Used - Good With Dust Jacket Good condition. Good dust jacket. A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. $20.04 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store. Reviews Goodreads reviews for The Mystery of the Other Girl