Lady on a Train (1945)
I'm convinced this would have broken into the canon of Christmas classics were it not for one extremely racist line of dialogue about eleven minutes into the movie. And, to be clear, the line in question (delivered as both a joke and a character beat) is quite offensive. War or no war, the line was bad then and is certainly bad now. The irony is other than that one joke, the movie holds up remarkably well in virtually every respect. It's a comedic Christmas murder mystery in the vein of The Thin Man starring Deanna Durbin as a fan of the mystery genre who jumps at the chance to investigate a murder she partially witnesses from the window of a train. The tone is closer to that of an adventure comedy than a noir, though it occasionally borrows stylistic embellishments from the genre it's poking fun at. If you took my advice a few years ago and watched Mystery of the Wax Museum , this strikes an similar balance between homage and parody (Durbin's character is also reminis...