Cave-in! (The Hardy Boys #78) By Dixon, Franklin W. Books / Paperback Books ISBN: 067142369X / Publisher: Wanderer Books, September 1983 Price Starting at $8.25 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 Good condition. 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. $8.25 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 Cave-in! (The Hardy Boys #78)