The Disappearing Floor (Hardy Boys Mystery Stories)

**This is a USED BOOK. It may show some wear and tear. Used books are final sale. No refunds or exchanges.** COVER may be different than what is pictured. Stock images are used.**

Learn the secrets of the disappearing floor in the thrilling Hardy Boys Mystery Stories. Embark on an adventure with expert detectives as they use their scientific knowledge and expertise to uncover the mysteries hidden within the novel's pages. Don't miss the chance to solve a case alongside the Hardy Boys!