Ian Charleson is a sympathetic but savvy Russian spy, sent to London at his own peril in order to smoke out a traitor within the KGB ranks. Edward Woodward (famous as "The Equalizer") is the British cat who most wants to catch this mouse. But Kyril is in peril from his own countrymen, too -- from people like Povin (Denholm Elliot), an unassuming but nervous KGB operative who doesn't know exactly what Kyril may be up to.
The cast is absolutely all-star, with the greats you've seen do other fine stuff in British film and television. Besides Charleson, Woodward, and Elliot, lead roles are also filled by Joss Ackland, Richard E. Grant, John McEnery, Peter Vaughn, James Laurenson, and Hugh Fraser.
Recommended for anyone interested in intriguing spy stories, and well-made films. The plot will keep you guessing and figuring things out right up till the very end.
This intriguing short miniseries was released on Region 2 DVD in its full-length 210-minute form in 2010 by Network DVD -- check the internet or Amazon UK. Highly recommended.