I can't really condemn the movie because it does work. There is enough film noir elements to consider it a noir movie, but I think it's only just in the category.

There's nothing sinister in this piece, and that's where the noir elements fail. Sure, the disease might be considered sinister, but I have a hard time seeing that. The movie hints at a darker side: Blackie may be trafficking human beings, the New Orleans police are only too willing to arrest a reporter, the specter of the plague hangs over all of the people in the movie... but those are really only hints.

There's no attempt made to question Reed's motivations, as one with do with Marlowe or Spade, nor is there any attempt to bring a humans side to Blackie, which would make him even more contemptuous if the human trafficking was actually played out.

That lack of depth is what fails the movie in the end.

The story is decent, the acting is good, the writing and direction are well done... but there is nothing to make this a movie you should return to over and over. Worth watching once, maybe twice if you don't remember it from years ago, and then putting away.