Chopping Mall (1986)
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
Sweet Murder (1990)
Lisa Smith is having trouble making the rent, so she advertises for a female roommate A young woman named Laurie moves in, unaware that Lisa is an insane killer