Part One is the twenty-fifth and final episode of the sixth season and Part One has a cliffhanger ending where Mr. Burns is shot by an unidentified assailant. The Simpsons Season 6 Episode 25 – Who Shot Mr. Burns?: Part 1. Watch The Simpsons Season 6 Episode 25 – Who Shot Mr. Burns?: Part 1 online live for. As Mr. Burns lies in intensive care, Chief Wiggum - with some help from Lisa - tries is ridiculous enough to actually work, and that goes for the whole episode.