Strother Martin, Dirk Benedict, Heather Menzies, Richard B. Shull, Tim O'Connor, Jack Ging, Reb Brown, Ted Grossman, Kathleen King, Charles Seel, Ray Ballard, Felix Silla, Noble Craig,
David, a college student, is looking for a job. He is hired by Dr. Stoner as a lab assistant for his research and experiments on snakes. David also begins to fall for Stoner’s young daughter, Kristina. However, the good doctor has secretly brewed up a serum that can transform any man into a King Cobra snake-and he plans to use it on David.