The Duchess of Malfi and Gatsby

In all the years I've known and loved this brilliant horror movie (yes, horror movie), I've not yet heard anyone point out the direct line back to Webster's The Duchess of Malfi.
Susan is the Duchess. Has a relationship with someone her brother (brothers plural in TDOM, amalgamated into one in the movie) doesn't approve of.
T.J. Hunsecker is essentially Duke Ferdinand, insanely protective of his sister to the point where it's pretty clear he has incestuous feelings. Prepared to kill anyone she has a relationship with.
His right hand man is Falco, who is Bosola in TDOM. Bosola does Ferdinand's dirty work, not least setting out to track down and catch Antonio, the Duchess' lover, who is Steve, in the movie.
I won't carry on with teasing out the parallels. Go and look at a synopsis or better still, read / see the play. Sweet Smell is just like a Jacobean Tragedy, only with a slightly happier ending. Odets, at the very least, as a playwright himself, would certainly have known TDOM.
This isn't in any way to take away from SSOS. Both works are masterpieces, in my opinion.

Oh and one more thing - J J Hunsecker? T J Eckleburg from Great Gatsby? Surely a reference. And a brilliant one. Look at the opening shots - J J's eyes in spectacles staring out from a billboard over the nightscape of New York. Here's F Scott on T J Eckleburg's billboard-eyes:

"But above the gray land and the spasms of bleak dust which drift endlessly over it, you percieve, after a moment, the eyes of Doctor T.J.Eckleburg. The eyes of Doctor T.J.Eckleburg are blue and gigantic - their irises are one yard high. They look out of no face, but, instead, from a pair of enormous yellow spectacles which pass over a nonexistent nose. Evidently some wild wag of an oculist set them there to fatten his practice in the borough of Queens, and then sank down himself into eternal blindness, or forgot them and moved away.But his eyes, dimmed a little by many paintless days, under sun and rain, brood on over the solemn dumping ground"

Or later on in Gatsby:

"I spoke to her," he muttered, after a long silence. "I told her she might fool me but she couldn’t fool God. I took her to the window" – with an effort he got up and walked to the rear window and leaned with his face pressed against it – "and I said ‘God knows what you’ve been doing, everything you’ve been doing. You may fool me, but you can’t fool God!’"

Standing behind him, Michaelis saw with a shock that he was looking at the eyes of Doctor T. J. Eckleburg, which had just emerged, pale and enormous, from the dissolving night.

"God sees everything," repeated Wilson.

"That’s an advertisement," Michaelis assured him. Something made him turn away from the window and look back into the room. But Wilson stood there a long time, his face close to the window pane, nodding into the twilight."

I rest my cases.
Oh and excuse me if someone else has already said these things...