A Russian officer is sent to the U.S. to try and stop sleeper agents who will mindlessly attack government entities when they hear certain coded words.
Don Siegel
Charles Bronson
Lee Remick
Donald Pleasence
Tyne Daly
Alan Badel
Patrick Magee
Sheree North
Roy Jenson
John Mitchum
Jacqueline Scott
Frank Marth
Helen Page Camp
Ed Bakey
Carmen Zapata
Kathleen O'Malley
