COMMUNITY HALLOWEEN EPISODES, RANKED

No disrespect to Dan Harmon.
  1. 1.
    Epidemiology
    Season 2 - The Zombie one.
  2. 2.
    Introduction to Statistics
    Season 1 - The Dia de los Muertes one.
  3. 3.
    Paranormal Parentage
    Season 4 - The Scooby Doo one.
  4. 4.
    Horror Fiction in Seven Spooky Steps
    Season 3 - The Scary Stories one.