Directed by Don Siegel, this 1977 thriller follows a Soviet military attaché dispatched to America to neutralize a covert network of programmed assassins activated by specific verbal triggers. The film explores Cold War paranoia through its taut narrative, featuring Charles Bronson as the determined operative tasked with dismantling the conspiracy before the sleeper agents can strike critical government targets. With a screenplay by Peter Hyams, Stirling Silliphant, and Walter Wager, the ensemble cast—including Lee Remick and Donald Pleasence—delivers compelling performances that anchor this suspenseful examination of espionage and psychological manipulation.