Hardy Boys 19: the Disappearing Floor

In 'The Disappearing Floor,' the nineteenth book in the classic Hardy Boys series, teenage brothers Frank and Joe Hardy are called upon by their famous detective father to help solve a puzzling case. The trail takes them to an eerie mansion on the outskirts of their hometown, where they must contend with a jewel thief, the sudden death of an heir, a 'galloping ghost,' a 'savage-looking hound,' and a college professor's strange invention. This fast-paced mystery is filled with adventure and teamwork, showcasing the brothers' bravery and deductive skills. While the book is from 1940, making it an original edition before later revisions, it offers pure entertainment for young readers who love a good whodunit. Parents should note that early Hardy Boys books, while thrilling, may contain social portrayals that reflect the era in which they were written.