NATIONAL GEOGRAPHIC CHANNEL, 1 hr

In 1985 Bob Ballard made the greatest find in the history of marine archeology. Join Dr. Ballard as he returns to Titanic for the first time in 20 years. Learn the top-secret Cold War drama behind his triumph -- and how the lost liner is again threatened with disaster, as the wreck becomes a target for callous, greedy treasure hunters.

Partisan Pictures/Blackstrap/Odyssey Productions