Soviet mastermind Nicolai Dalchimski steals a list of names of hypnotically influenced KGB agents who are living in the U.S. When Dalchimski realizes that the secret to forcing the "agents" to complete their missions is via the reciting of a Robert Frost poem, Dalchimski sets to work and soon the "agents" are committing sabotaging acts to military targets. With Soviet officials inept to disclose their dirty scheme, they send Colonel Borzov overseas to put an end to Dalchimski's evil plan before the U.S. declares war.

The cast includes: Charles Bronson, Donald Pleasence, Tyne Daly, Lee Remick, Alan Badel, Sheree North, and Patrick Magee.

Directed by: Don Siegel.