Voyage to the Bottom of the Sea: Tracking mysterious sounds from the depths, the Seaview discovers a group of men in an underwater grotto. Odd elements in the environment have caused the men to mutate into living rock. Their leader, a former submarine captain, wants to use the Seaview to escape the grotto and conquer the world.

Starring:

David Hedison, Del Monroe, Richard Basehart, Robert Dowdell, Terry Becker

Genre:

Adventure, Sci-Fi