The Hardy Boys Mysteries

Season 1 Episode 3

The Disappearing Floor

Aired Sunday 7:00 PM Mar 06, 1977 on ABC
9.4
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The Disappearing Floor
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While the boys go on a research for their father's case chasing after a couple of criminals, they encounter a UFO which leads them into a mystery involving a missing Russian scientist, some Russian agents, and a mysterious house.

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