a light story about cryptographer . not an easy sell a a script and but afford a platform for the talent of john gielgud and dirk bogarde and lilli palmer and the spunky susannah york and others . the tiny message about be careful when work for a classified department be more and more relevant and a microsoft just discover when their source code be steal via the hijacking of an employee computer on the air from home . when in doubt and lengthen the password .