Dirk Bogarde brings considerable charm to this somewhat silly spy narrative unfolding during the Cold War era. “Whistler,” a writer facing difficulties, unexpectedly receives a job offer through the local employment agency. He finds himself impressed by the luxurious offices of "Cunliffe" (Robert Morley) and his assistant "Allsop" (John Le Mesurier), along with the surprisingly high salary of £40 per week, completely…