Part 2
The Czech defector starts a 'mole' hunt. The KGB are interested in the missing letter. Charley Farthing wants his day in court to denounce Professor Tyler, and Harry Maxim has a hard time with them all.
Directing
Alastair Reid · Director
Writing
Brian Clemens · Writer
Guest Stars (23)
Roger Ashton-Griffiths as Ivan
Willoughby Goddard as Master
Charles Hodgson as Gerald Jackaman
Jill Balcon as Mary Jackaman
Patrick Monckton as Petrov
Elizabeth Spender as Melinda Fay
Brown Derby as Bob Etheridge
John Graham as Rex Masson
Rachel Herbert as Barbara Masson
Patrick Connor as Ralph Seddon
Rom Anderson as Zuzana Kindl
George Pensotti as DI Ferris
Helena Little as Markova
Gerard Hely as Wing Commander Neal
Derek Lord as Garage Man
Patrick Lewsley as Pub Landlord
Terry Downes as Hotel Manager
Charles Simon as Army Colonel
Stephen Warbeck as Student
Paul Doust as Student
Paul Ashby as Student
Stephen Oxley as Student
John Flint as Policeman at NATO