In the Last Mysteries Of The Titanic DVD, Academy Award-winning director James Cameron leads a team of underwater explorers on a series of historic dives to document the remains of the world's most famous shipwreck. Using two, $20-million research subs, four mini-robots, a seafloor-to-satellite data system and a suite of the most advanced cameras and lights, Cameron's team provides real-time images of the ship's interior, including hidden passageways and vast rooms that haven't been seen in over 90 years.