One of Hitchcock's lesser known classics is also one of my top five favorites. Shadow of a Doubt is spooky and atmospheric, and thanks to an unforgettable performance from Joseph Cotten in the main role, it stands up today as one of Hitchcock's best earlier works. Cotten's the nefarious Uncle Charlie, who comes to visit his sister and her family in their idyllic small town where nothing exciting ever happens. His teenage niece, herself named Charlie (in pointedly twisted Hitchcock fashion), worships her uncle like no one else...that is until she begins to suspect he's a serial killer. It's a creepy, dark story and Teresa Wright and Joseph Cotten make the most of this seriously disturbed familial relationship.