Alfred Hitchcock,Anna Navarro,John Vernon,Richard Derr
A high ranking Russian official defects to the U.S., where he is interviewed by U.S. Agent Michael Nordstrom. The defector reveals that a French spy ring codenamed "Topaz" has been passing N.A.T.O. secrets to the Russians. Michael calls in his French friend and counterpart Andre Devereaux to expose the spies.—Col Needham