Documentary will explore the disaster, in which the luxury liner carrying more than 4,200 passengers ran aground off the western coast of Italy, killing 17 and injuring more than 60 others with 15 still unaccounted for. It will also weave accounts of the tragedy from passengers, crew members and the Coast Guard and feature never-before-seen video and CGI to reconstruct the ship's sinking as it happened. The documentary also compares the Costa Concordia to the Titanic and look at just how the ship sank and whether or not the disaster could have been prevented.