Watch The Simpsons Season 21 Episode 4 online via TV Fanatic with over 6 options to watch the The Simpsons S21E4 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Simpsons World.
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The annual Halloween special for the Simpsons is broken into three stories: Dial "M" For Murder; Don't Have a Cow, Mankind; and The Musical.