Fred Olen Ray Director, Producer J.J. North Angel Grace Actor Raelyn Saalman Inga Actor Tim Abell Mark Actor Tammy Parks Betty Actor Ted Monte Wilson Actor Michelle Bauer Dr. Joyce Mann Actor George Stover Dr. Eric Kramer Actor Nikki Fritz Rosita Actor Ross Hagen Truck Driver Actor John Henry Richardson Bob Gordon Actor Russ Tamblyn Gas Attendent Actor Tommy Kirk Passenger Actor Stanley Livingston Glenn Manning Actor John Lazar Dr. Lindstrom Actor