Made just a year after Lang's The Woman in The Window, Scarlett Street is very much a follow up to that film. Although it isn't the same narrative, it uses the same principal actors from the previous, while exploring similar themes. While not the same in terms of cinematography, Scarlett Street rather builds its peculiar tension through the intricate relationships and connections between the characters, the lies, deceit and suspicions. While the audience might find its sympathy with Edward G. Robinson's character, there is not really any character in this that is not in some way very flawed or wronging someone else.
It is darker than The Woman in The Window, but less mysterious. Building less on formal principles, Scarlett Street is a looser film in terms of structure, but that doesn't diminish the straining tension which is built up as the narrative progresses. The films might seem on the surface to be fairly typical noir films, but Lang's films make themselves noteworthy from the rest of the genre with their uniquely intricate cinematography, complex relationships which strengthen the narrative and unnerving tension built up.
For some reason, it seems, Lang's American films haven't received as much attention as his early silent work, particularly M and Metropolis. But I do feel that his films are just as good, or indeed, even better than his European output. His films are dark, mysterious, ambiguous and subtle, interweaving the different elements that makes his films such intricate narratives, and I find his building of tension and meaning much more elegant than most directors of the same era. Fritz Lang was very much the equal of such masters as Max Ophüls, Alfred Hitchcock and Douglas Sirk. Perhaps because he wasn't very popular in Hollywood or because his films were very controversial was the reason for him later on not being as famous or talked about.
Still, The Woman in The Window and Scarlett Street are two excellent films, and are great introductions to the German master's work in Hollywood. Top class noir.