Shadow of a Doubt (1943)
Who knew Thornton Wilder, the playwright who penned Our Town, had it in him to write such a murderous tale? Hitchcock, ever the innovator, teamed up with Wilder to create this tale starring Joseph Cotten as Uncle Charlie and Teresa Wright as his niece. Uncle Charlie seems to be a mild-mannered guy, but his loving niece finds out something sinister about him and has to make some tough, dangerous decisions about how to handle the sticky situation. Hitch often said that Shadow was his favorite of all his films.