Detective Lohmann (Otto Wernicke) is faced with the unfolding of a secret army serving a hidden master. Only slowly did he begin to associate Dr Mabuse (Rudolf Klein-Rogge) with the growing chaos, even as Dr Mabuse sat ( ten years) frozen in his asylum bed hovering at the very edge of life.
Lots-o-subtitles and German, but it's an unrelenting twisted story. I kept coming back till I'd watched all of it. Good thing too, cause they pulled it from instant-view shortly thereafter. Definitely strange enough to watch again if it reappears in my instant queue.