Just four months ago, China Eastern Airlines 5735 crashed into the side of a mountain with over a hundred passengers and crew on board, killing everyone instantly. But the cause of this tragedy would elude investigators, and is still unknown today. However, what has been uncovered so far is painting a dark and disturbing picture of the events that took place in the cockpit moments before impact. Join Caroline on today's special episode, the investigation of what we know so far about China Eastern 5735.