Hosted by Alex Trebek, JEOPARDY! The Greatest of All Time is produced by Sony Pictures Television. Harry Friedman will executive produce. This epic television event brings together the three highest money winners in the long-running game show’s history: Ken Jennings, Brad Rutter and James Holzhauer.
https://abc.com/news/insider/jeopardy-the-greatest-of-all-time-begins-tuesday-january-7-on-abc

