AllMovie

In Southern California, Erskine (Efrem Zimbalist Jr.) and Rhodes (Stephen Brooks) go undercover as missile-plant works to plug up a security leak and capture an enemy spy. The situation becomes even more precarious when the Communist higher-ups arrange the "accidental" demise of one of their own agents to cover their tracks--and then formulate a plan to kill Erskine as well. In a plot device worthy of Alfred Hitchcock, the spies operate their network out of a local movie theater (which seems to run nothing but old Warner Brothers films!)