When a leak of information in the African section of British Intelligence is discovered, a security man is brought in to investigate.
Cast
Nicol WilliamsonMaurice Castle
Richard AttenboroughColonel John Daintry
Derek JacobiArthur Davis
John GielgudBrigadier Tomlinson
ImanSarah
Joop DodererCornelius Muller
Robert MorleyDoctor Percival
Ann ToddCastle's MotherAnthony WoodruffDr Barker
Keith MarshPorter
Gary ForbesSam
Angela ThorneLady Mary Hargreaves
Tony HaygarthBuffy
Cyd HaymanCynthiaPaul SeedShop Assistant
