| Chalk M for Murder: The Stockholm Film Review examines the film. |
| Chicago Sun-Times: M: Roger Ebert of the film "credited with forming two genres: the serial killer movie and the police procedural." |
| Fritz Lang's M: DVD review by Gary Morris calling it "a textbook classic restored to perfection." |
| Fritz Lang's M: Background information, storyline, political impact, history, pictures, and review. |
| M: DVD Times review of a 2003 rerelease. |
| M: Cast, crew, plot synopsis and review from the All Movie Guide. |
| M: Five star review with synopsis, cast/crew credits, and other background information from TV Guide Online. |
| M (1931): Full cast and crew for the film, and other information from the Internet Movie Database. |
Classical
