The film Humbert, Charlotte and Lolita watch at the drive-in is The Curse of Frankenstein (1957). When the film cut to the three characters in the car, Stanley Kubrick had a different soundtrack recorded to make the film sound scarier.
Yes, it is.
Because The Creator WAS The Monster; the Creation was an innocent.
It wasn't HIS fault that his Creator accidentally endowed him with the pre-deceased cerebral cortex of an executed murderer that was hanged for being criminally insane.... BUT, he got better. And stopped killing people. All by himself.