Premise: "Introduction to Finality" is the 22nd episode of the third season of the American television series "Community" and the third season finale. It originally aired on May 17, 2012 on NBC. This was the last episode to air with series creator Dan Harmon as showrunner before he was fired, though Harmon would later return as showrunner for the 5th season.
Hypothesis: Dan Harmon never returned to Community after the third season