As the movie came out during WWII, it seems to have a direct parallel to the evil leaders loose in the world, particularly in the film's final scene.

The second half, including the increasing revelation of Uncle Charlie's dark views of humanity and the lengths to which he will go to protect himself, is what make the film so sinister. On the other hand, there is a real small town feeling to this setting, helped in no doubt by Thornton Wilder being one of the screenwriters, and the characters of Charlie's father (Henry Travers) and his friend (Hume Cronyn) passing the time by talking about the perfect murder are absolutely priceless. Some of the tension is also missing because we're pretty darn sure Uncle Charlie is guilty. Amazingly, that day they receive a telegram telling them to expect him. I considered a slightly higher rating, but thought the pace in the first half of the movie was a little slow. Charlie's peppy niece Charlotte ( Teresa Wright ), nicknamed 'Young Charlie' after her uncle, has idolized him for years, and complains to her family that life wouldn't be so dull if he paid them a visit. Trouble is just behind him though, and it gets worse when his niece (also 'Charlie', named after him, and played by Teresa Wright) begins to suspect him of being the 'Merry Widow Murderer'. Uncle Charlie (Joseph Cotten) is on the run from the law on the East Coast, and he settles in with his sister and her family in Santa Rosa. Hitchcock said this was his favorite film, and there is a quiet evil about it that makes it truly horrifying.

Shadow of a doubt song in movie