Season 3 of Mr Mercedes on PEACOCK streaming in March .
The third and final season of the Stephen King adaptation will officially premiere on NBC's streaming service Thursday, March 4. King himself confirmed the news on Twitter this morning. "Good news for those of you who have read and enjoyed the Bill Hodges trilogy, starting with Mr. Mercedes," he wrote, "Peacock is going to drop the 3rd season — the best one, I think — on March 4th. It's based on Finders Keepers. Watch for Bruce Dern! He's great!"