Otto Wernicke as Kriminalkomissar Lohmann appears in both.
When pursuing the lead of the 'Confiserie' wrapper, a detective visits a sweet shop which has many cutout figures of Mickey Mouse/ Steamboat Willie on display.
We see a poster of this film on a wall in M.
In the cellar scene, Jonathan's shadow looms on the wall over Dr. Einstein (Peter Lorre), reflecting the beginning of "M" when the shadow of Hans Beckert (Lorre) looms over a little girl
The balloon seller is identical to the one in M
Alex Guinesses introduction (shadow on notes outside store) is identical to Peter Lorre's introduction in M.
Fritz Lang mentions this film.
Nick imitates Peter Lorre's performance
mentioned a few times
The scene when the murder is judged
klansmen being exposed at seminole meeting reminiscent of Beckert (Lorre)'s basement "trial"
They are discussing, which movie the dying prostitute thought of.
Cop mentions character carving the letter M on victim's bodies is referring to this movie
Waxwork of child murderer offering a ballon to a young girl is taken directly from the Peter Lorre film.
In the discussion of "Shadows and Fog" (1992), Roger Ebert wonders why one wouldn't just rent this movie.
Crow: "Oh, hi, Peter Lorre as 'M.'"
mentioned by Robin Williams
Pays homage to M (1931), with the main character also a murderer, physically resembling M's Peter Lorre.
movie poster shown
Character is marked with an "M" on his back, exactly like in Fritz Lang's film "M".
production / publicity still of Peter Lorre in the film
Mentioned by one of the characters and is visible on a wall
the mock trial and fate of mr. baek recalls the finale from M by Fritz Lang
Use of whistling to identify the killer.
The woman screaming "elsie" out of the upstairs window is a lift from the beginning of "M"
Seen advertised on a billboard.
Movie still shown.
child murderer in Berlin is identified by the song he sings, the involvement of the underworld, the "trial" of the serial killer
Cassie is writing an essay about German Expressionism and mentions Fritz Lang and "M", which we can see on her monitor.
Mentioned in the TV ratings table printed in the newspaper
Poster shown in flat
A scene is extensively discussed in the film.
Wim Wenders picks this movie and talks in length about it
One of the vampires whistles "In the Hall of the Mountain King" while stalking prey.
Referenced by name
The balloon caught in the tree was an homage by the writer to the baloon caught in the wires in M. A film also about child abduction and murder.
Villain whistles while hunting for Hanna, a child. Later, "In the Hall of the Mountain King", the song whistled in "M' is played whilst the villain enters the Grimm house.
One of the 50 gold film reels you can find.
Poster seen in basement
At the end of the film, the Boy whistles "In the Hall of the Mountain King" as he walks away.
mentioned by Alan
Photo of film is shown on a magazine cover.
The movie shown at Club Tepes.
Featured in the Volker Schlöndorff segment.
The main character watches this film on her TV
Jack watches this film on his laptop and later mentions it.
Clip from trailer.
Footage of this movie is shown.
Peter Lorre look-alike with M on back of shirt
Parody movie poster shown in the film of "M2."