Here is HARDY BOYS #10, "What Happened At Midnight"  Book in NEAR MINT and dust jacket in overall VERY FINE to NEAR MINT condition.  Copyright 1931, but this a later reprint from the late 1950's or 1960's.  25 chapters, 213 pages of story.  

Why buy from me?  I have been selling on eBay since its first year and have 100% customer satisfaction.  Trust my 2000+ positive eBay feedback to assure you of a satisfying buying experience with no hassle, swift and safe shipping and accurate description.  Scans are of the book you will receive.  Notice the cover is protected by plastic. My asking prices are below the norm, but you can make a reasonable offer.  I've been doing this too long to quibble. Thank you for your interest.