Expressionistic qualities in a film called M 1) you can approach the film by focusing on thematic or narrative elements (the idea of the double; the sense of a malevolently powerful figure influencing the lives of others; the incursion of menace into the everyday world), and that approach will, inevitably, involve some discussion of stylistic elements like mise-en-scene. 2) It would be better to consider the film in relation to The Cabinet of Dr. Caligari 3)What I would suggest is that you concentrate on a simple thesis?for example, that the film uses light and shadow in Expressionistic ways, or that the film shows a more ?naturalized? version of the distortion seen in Caligari?and then explore that thesis using specific examples that caught your attention during the screening of the film.