Nick Segal

A group of young shopping mall employees stay behind for a late night party in one of the stores. When the mall goes on lock-down before they can get out, the robot security system malfunctions, and goes on a killing spree.

A college student gets into a car crash and becomes a special kind of ghost who can make himself invisible or corporeal at will. He takes advantage of his powers to pursue his fellow female students, during the infamous 'Hog Day'.