1,450 feet underwater and no way out. Charlton Heston stars in 1978's claustrophobic actioneer "Gray Lady Down" as Navy captain Paul Blanchard. After colliding with a Norwegian freighter off the coast of Cape Cod, his submarine Neptune sinks to the oceanfloor, teetering on the edge of a deadly precipice. With every earth slide threatening a descent into death for the captain and his crew, their only hope of survival lies with a rescue mission the experimental submersible Snark in this suspenseful race against time. Co-starring David Carradine, Stacy Keach, and Ned Beatty.