Dunlap and revised and re published in 1964.
The disappearing floor.
About hardy boys 19.
The disappearing floor by dixon franklin w.
A disappearing floor a huge savage looking hound a galloping ghost and a college professor s startling invention are just a few of the strange elements that complicate the boys efforts to solve both mysteries.
This book was written for the stratemeyer syndicate by john button in 1940.
A disappearing floor a huge savage looking hound a galloping ghost and a college professor s startling invention are just a few of the strange elements that complicate the boys efforts to solve both mysteries.
The boys also discover that someone else is looking for the scientist a couple of russian agents.
Once again frank and joe hardy take on a puzzling case when their famous detective father asks the boys to assist him in tracking down a notorious jewel thief and his accomplices.
A disappearing floor a huge savage looking hound a galloping ghost and a college professor s startling invention are just a few of the strange elements that complicate the boys efforts to solve both mysteries.
They are renowned youth detectives in this story along with their dear friend chet morton.
The disappearing floor is volume 19 in the original the hardy boys mystery stories published by grosset dunlap.
A disappearing floor a huge savage looking hound a galloping ghost and a college professor s startling invention are just a few of the strange elements that complicate the boys efforts to solve both mysteries.
The disappearing floor is a good fun episode.
A disappearing floor a huge savage looking hound a galloping ghost and a college professor s startling invention are just a few of the strange elements that complicate the boys efforts to solve both mysteries.
It was first published in 1940 by grosset amp.
While looking for a missing scientist frank and joe get more than they bargained for with a ufo that runs them off the road and an old house with growing rooms and disappearing floors.
Contents show plot summary once again frank and joe hardy accept the challenge of a puzzling case when their famous detective.
Wikia banner the disappearing floor is the 19th book in the hardy boys.