Community: Season 3, Episode 5

3 - 5:

When Britta (Gillian Jacobs) runs anonymous personality tests on everyone for a psychology class, one of the test results seems to indicate that someone in the group is deeply disturbed. At the group's Halloween pre-party, she enlists Jeff (Joel McHale) to help draw out the potential sociopath and the two of them lure everyone into telling their favorite horror stories. The results are spookey.