As the study group sets to work on their first big assignment in biology - a terrarium - they are driven to distraction over how they should pair off to do their project. Elsewhere on campus, Chang patrols the school grounds looking for signs of trouble and imagines himself in a noir detective mystery.

When Britta 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 to help draw out the potential sociopath and the two of them lure everyone into telling their favorite horror stories. The results are spookey.