Hardy Boys 19 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.

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.

While Frank and Joe help their father locate a notorious jewel thief, they also explore the mysterious death of a tycoon's nephew years before.

While Frank and Joe help their father locate a notorious jewel thief, they also explore the mysterious death of a tycoon's nephew years before.

ATAC BRIEFING FOR AGENTS FRANK AND JOE HARDY MISSION: Good thing you're in Egypt, because we have a mystery on our hands. A man has been murdered, possibly over a map to a precious golden mummy. Could there be a curse surrounding the ancient mummy and his treasure? LOCATION: Cairo, Egypt, and the surrounding area. POTENTIAL VICTIMS: Anyone in pursuit of the treasure. SUSPECTS: Several people on an expedition are suspects. Find them before they find the mummy and the money. THIS MISSION REQUIRES YOUR IMMEDIATE ATTENTION. THIS MESSAGE WILL BE ERASED IN FIVE SECONDS.

ATAC BRIEFING FOR AGENTS FRANK AND JOE HARDY MISSION: Determine the cause of recent injuries and deaths at a camp for troubled teens. LOCATION: The wilderness surrounding Moosehead Lake in Maine. POTENTIAL VICTIMS: More boys in the program. Counselors. SUSPECTS: We have reason to suspect that the founder of the camp, Linc Saunders, is behind this.