Captain Nemo and the Underwater City (1969)

When Captain Nemo saves the passengers of a sinking ship and takes them to his Utopian underwater city he discovers that not all of his guests agree to remain there forever.

Director: James Hill

Cast: Robert Ryan, Chuck Connors, Nanette Newman, Luciana Paluzzi, John Turner, Bill Fraser, Kenneth Connor, Allan Cuthbertson, Christopher Hartstone, Ian Ramsey, John J. Moore, Anthony Bailey, Alan Barry, Vincent Harding, Hyma Beckley, Jim Brady, Maxwell Craig, Margot Ley