An American agent is assigned to track down a renegade Soviet spy who is building an atomic device in Los Angeles and plans to destroy the city with it.
Howard Duff
as Dave Pomeroy
Linda Cristal
as Dr. Paula Stevens
Stephen McNally
as James Kincade
Nehemiah Persoff
as August Best
Anne Jeffreys
as Myra Pryor
Oscar Beregi Jr.
as Dr. Paul Cerbo
Gregory Morton
as Steadman
Dennis Hopper
as Goff
George Barrows
as Ernest
John Hoyt
as Dr. Milton Becker
Steve Franken
as Hal Johnson
Mike Farrell
as Dick Blaine
