If it weren't for good old Trevor Howard, this film would not be nearly so interesting. He is always enjoyable to watch, as he is always convincing and we want to see what he will get up to. Here he is thrown out of MI-6, the foreign secret service, rather unceremoniously after years of brilliant service in the field, and has to find some work. He ends up taking a temporary job cataloguing butterflies, of which the Clouded Yellow is a particularly pretty one which comes across the English Channel in a good summer and flutters around as delightfully as Jean Simmons. And yes, she is living in the rambling country house where the butterfly collection is. She is the psychologically disturbed and mysteriously orphaned niece of a rather creepy aunt and uncle. Or at least they say, rather too often, that Jean is psychologically disturbed. But is she really? Did she witness as a very young child what really happened to her parents? They say she 'found them'. But did she see who killed them? Clearly there is some vintage mystery material here. Jean Simmons at this stage in her career had very bushy eyebrows and looked more like a trapped wild animal than a girl. Alas, she did not have the magically convincing wildness of Jennifer Jones in GONE TO EARTH (1950, see my review), or this film could have become something of a classic. The direction by Ralph Thomas is also rather uninspired and pedestrian. So this film never really rises to the level of a butterfly's flight. Come to that, the story is pretty contrived and corny. The film is a tasty amuse-bouche, but should never be confused with a main course.