A herpetologist investigating a series of fatal rattlesnake attacks discovers that the creatures have been infected by a mysterious nerve gas disposed of in the desert by the military.

Sam Chew Jr.
as Dr. Tom Parkinson

Elisabeth Chauvet
as Ann Bradley

Dan Priest
as Colonel Stroud

Ronald Gold
as Captain Delaney

Al Dunlap
as General Hinch

Dan Balentine
as Pilot Hawkins

Gary Van Ormand
as Woodley

Darwin Joston
as Palmer

Tony Ballen
as Sheriff Gates

Celia Milius
as Woman in Bathtub