Scarlet Street. I just watched this movie tonight, and boy, was it great. It’s probably best classified as a black comedy. The plot, which is delightfully complex, is full of “oh no!” moments that keep you on the edge of your seat. Edward G. Robinson’s performance is great, and the costumes are really fun to look at. And because it’s in the public domain, you can watch the whole thing at archive.org, which you should go do right away.