An eager anthropologist comes by the location of Bigfoot, the animal brought to the Earth by aliens. Bigfoot is awakened from his hibernation and causes havoc. Oscar assigns Steve and Rudy to catch him. When they grab him he's numb by having fallen into an icy river and Rudy analyzes him and finds the creature is undergoing an amazing transformation.
Episode number: 5x5 Production Number: 47311 Airdate: Sunday October 09th, 1977