Season 1 Episode 3
First Aired: April 4, 2003
Description: Burt tracks down and kills a Shrieker out in the valley, only to find out it was part of a government funded project to train Shriekers for rescue missions. But when a storm knocks damages the equipment controlling them, the remaining Shriekers escape and begin to multiply. In an effort to survive the Perfection residents must make a stand at Burt's place.