This is a tense detective movie that holds up very well, an astonishing accomplishment but par for the course with Fritz Lang. The mystery is mystifying, short on clues and long on adventure, and the solution is surprising, though something in the vein of Alfred Hitchcock Presents would have been better. The twists and turns of the plot are equally clever and riveting.
Closest comparison: It’s like The Batman (2022) by way of M.
Setting: Crime
Plot: Detective
Tone: Thriller