A college sorority is harassed with calls from a crazy man, slowly they start to get picked off one by one. We don’t know much about the killer other than they refer to themselves as Billy, and they’ve apparently done something horrible to their sister Agnes. Jess Bradford is one of the students, she’s pregnant with a piano player Peter’s baby. Peter is slowly starting to go a bit mad due to Jess’s insistence on an abortion, Peter could very well be Billy. The big twist is that the calls have been coming from upstairs the whole time, right under their noses.
