A nerdy high school super whiz experiments with a chemical which will transform his guinea pig "Mr. Mumps" from a gentle pet into a ravenous monster. In a fit of rage against his tormentors at the high school, Vernon Potts goes on a killing spree, eliminating all of those who ever picked on him - the Gym Coach, the School Jock, The Creepy Janitor & his hated teacher, Ms. Grindstaff.

• DirectorLarry N. Stouffer
• Release20 September 1973
• Genre
  Horror / Science Fiction
• Duration1h 25m
• Budget$67,000
• Revenue?
• Rate
  

  5.5
  35 reviews
• Productions

  Jamison Film Company, Crown International Pictures