Most shows got their start as a T. V. Movie. They were called Pilots. Some never made it to weekly shows. One such show was City Beneath The Sea. It actually had two pilots. The second one was a personal favorite when I was 12. (My God). Stuart Whitman was one of my favorite actors. He stars in it along with James Darren, Whit Bissell and Robert Wagner who plays a bad guy for a change.
Here’s a look at City Beneath the Sea.