It has a really unique atmosphere due to it being in that early period of sound films, so it doesnt have a real soundtrack outside of music and sound inside of the scene.

Also while its not exactly anti-cop, most of the measures the cops put in to try and catch the serial killer is entirely arbitrary "grrr more cops everywhere! go bother everyone thats a criminal!" shit that doesnt accomplish anything besides make everyone miserable. And the actual investigation they do to find him feels pretty grounded and realistic compared to a lot of police procedurals that try to make it exciting and dynamic, and I at least appreciate that a lot as someone whos guilty pleasure is true crime and police procedural stuff.