The Roaring Twenties (Raoul Walsh, 1939)

Narrator: Today, while the earth shakes beneath the heels of marching troops, while a great portion of the world trembles before the threats of acquisitive power-mad men, we of America have little time to remember an astounding era in our own recent history. An era which will grow more and more incredible with each passing generation until someday people will say it never could have happened at all.

The movie - based on a story by Mark Hellinger and brilliantly directed by Raoul Walsh - opens in this documentary style which will portrait two important decades of American history.
War veteran Eddie Bartlett (James Cagney) finds difficulties when he returns home: he has no job, the prohibition era has started and soldiers are no longer heroes:

Fletcher's Garage Mechanic: (After the war Eddie is asking to get his old job back) That guy thinks he's gonna' get my job just because he's got a uniform on. He used to work here.
Fletcher's Garage Mechanic: Yeah, those monkeys are gonna' find out what a picnic they had on Uncle Sam's dough while we stayed home and WORKED!

After some frustrated attempts to get a job he enters the bootlegging business almost by chance and he meets speakeasy hostess Panama Smith (Gladys George) and former war colleague, the ruthless George Halley (Humphrey Bogart).
The film portrays the rise of Eddie in the prohibition and jazz age (in the soundtrack we can hear many songs of that time as My Melancholy Baby, It had to be you or Bye bye Blackbird).
Eddie is not portrayed as an evil gangster but as a character caught between the need to survive and a good natured heart: He helps Jean (Priscilla Lane) though she will never love him: They live in different worlds and in fact she will take some advantage of his good will…

As other gangsters Eddie Barlett was also bound to fall: After 1929 things changed deeply in the Depression era, the prohibition was over and the gangster world had changed…

Panama: It's over for all of us: you, me, and George. Eddie, something new is happening, something you don't understand.

The words of Panama echo the ending of an era, the ending of gangster movies, the ending of characters like Eddie – killed on the steps in front of a church:

Panama Smith: He's dead.
Cop: Well, who is this guy?
Panama Smith: This is Eddie Bartlett.
Cop: Well, how're you hooked up with him?
Panama Smith: I could never figure it out.
Cop: What was his business?
Panama Smith: He used to be a big shot.

White Heat (Raoul Walsh 1949)

Ma Jarrett: Top of the world son!

Cody Jarrett (James Cagney), a leader of a gang of robbers aims to the top of the world.
He is not an ordinary gangster, we see him as a tough, wild character but also as a vulnerable, psychologically unstable man: he has strong headaches and he is strongly attached to his “Ma” (Margaret Wycherly) who is also part of the gang and as ruthless as a gangster can be.
Cody’s femme fatale wife Verna (Virgina Mayo) is not faithful to him and she has eye for gang member Big Ed. Jarrett lives in a tough world in which few people can be trusted:

Cody Jarrett: You know something, Verna, if I turn my back long enough for Big Ed to put a hole in it, there'd be a hole in it.

After being giving himself up by the police for some minor crime – an alibi for a violent armed robbery - he manages to direct his gang while he is in prison.
In jail he is befriended by Hank Fallon (Edmond O’Brien) – an undercover policeman who has taken the identity of Vic Pardo. Both plan a big heist and Hank will take the role of Ma Jarrett as Cody’s moral and mental support.
Eventually Cody will discover Fallon’s real identity but it will be too late, he will be heading towards his ending.

Cody Jarrett: A copper, a copper, how do you like that boys? A copper and his name is Fallon. And we went for it, I went for it. Treated him like a kid brother. And I was gonna split fifty-fifty with a copper!

Cody trapped in an oil refinery plant has no way to escape… This seems the epic closing chapter to Cagney’s gangster movies of the 30s

Cody Jarrett: Made it, Ma! Top of the world!

Philip Evans: Cody Jarrett...
Hank Fallon: He finally got to the top of the world... and it blew right up in his face.

High Sierra (Raoul Walsh, 1941)

Marie: …”just rushing toward death”

Marie's remark to Roy defines his doomed character. Gangster Roy Earle is taken out of prison by Big Mac, an old colleague who wants him to participate in a hold-up.

Just out of the prison Earle wants to go to the park to see “if the grass is still green and the trees still grow”. There is a big contrast between country and city in all the film: The country stands for freedom and the purity of man while the city is a symbol of corruption – an idea that will be present in other noir films.

Humphrey Bogart plays the role of Roy Earle – a hardboiled gangster with good feelings (the movie was a turning point in Bogart’s career). In fact we see him as a good-hearted man longing for purity – in nature, in his vision of Velma – the lame girl he helps…

Roy has to take part in a robbery in Tropic springs – then he will be able to return to the simple life he lived as a boy in Indiana. However things go wrong and he ends up chased by the police in the high sierra. His final companions, Marie (Ida Lupino) and Pard – a dog that brings bad luck to his owners - see him die and also become "free" in a dramatic ending.

The film was produced by Mark Hellinger and the script was written by John Huston and William Ripley Burnett. These names would be important in future noir films. In the same way actors like Cornel Wilde (Mendoza) or Barton McLane (Kramer) would appear in other noir movies.

Maybe High Sierra is not strictly a noir film but it was one of the key movies in the transition from gangster pictures to noir movies.