During a special on Jeopardy behind the scenes, Alex Trebek's wife Jean spoke openly about what concerns her about his cancer battle and how his team gives him a sense of purpose.
Below Alex Trebek shares what fans can expect from the "Jeopardy! The Greatest of All Time" special, in which the show's top winners -- Ken Jennings, Brad Rutter and James Holzhauer -- will compete in a series of matches to become the top champion. Plus, the contestants discuss the honour of being a part of the long-running game show.