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The Disappearing Floor

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. The trail leads to the outskirts of the Hardys’ home town and to a weirdly guarded mansion on the old Perth estate. With their pal Chet Morton, the brothers must tackle the mystery of the mansion heir’s sudden death. 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.

  • Format
  • hardcover
  • Pages
  • 176
  • Language
  • english
  • ISBN
  • 9780448089195
  • Genres
  • mystery, fiction, childrens, adventure, classics, crime, detective, juvenile
  • Release date
  • 1964