"His Girl Friday" and the 3 Act Structure.

The 3 act structure within the film, His Girl Friday, is quite simple. In the film, Hildy is a former journalist who comes to say goodbye to her ex-husband (Walter, who is also the Editor of the newspaper) and run off with another man whom she has fallen in love with. But Walter does not want her to leave, and tricks her any way he can so she can stay and write for his paper. Through Berg's terminology, we will look at the plot points of the film, and where and what the climax is of the film.
The intro of the film just sets up the situation of Hildy and Walter's past relationship. We see how the two interact with one another, as well as how they both act with Hildy's new fiance, Bruce. Walter wants Hildy to stay and cover the story of a convict (Earl Williams) about to face the death penalty. There is much controversy with the situation, with people for/against the penalty, as well as thinking that Earl is an innocent man. Seeing as Hildy loves a good story, and with a desire for writing, she decides to stay in town (instead of hopping a train with her new to be hubby). This is the first plot point within the film. This plot point asks a question (what will the article read, will Williams be freed, etc.) and the next act will answer this question. This first plot point is at 23 minutes.
The film goes on, showing us the "answer" to the previous plot point's question. Hildy visits Williams in jail and writes her manuscript for the article. Once she has everything she needs for Walter, she wants to hop the train and head off to her big trip. But Walter still wants her to stay (and to secretly try to win her over). This time though, it is not Walter who convinces her to stay, but Earl Williams! He escapes his jail cell and finds Hildy to question her about the article she is soon about to publish. The second plot point (60 minutes out of 91) is at this moment: Hildy panics and calls up Walter. With both fright and delight she tells him that she has Earl Williams in the press room. This PP is exactly like the last one, but this transition also escalates the stakes. We don't know if the mad man will win or what will happen to Hildy, etc.
Hildy has a mad man in her newspaper press room, and everyone wants to know all the juicy details. Cops, family members, coworkers, and Walter all come to her aid and try to make out what exactly is going on. To not give much away, I will skip ahead to the climax! Now, you may think that the climax has something to do with Earl Williams and his psycho personality, but that is where you are wrong. Instead, the climax (which happens around 90:15/91) is this: Hildy realizes she really is in love with her goofball editor Walter and wants to stay with him. It's kind of sad for Bruce, but it makes everyone in the audience feel warm and cuddly, breaks the tension, provides a great deal of comfort (obviously), and shows us a perfect example of the Hollywood Happy Ending. His Girl Friday is a great example of the Hollywood 3 act structure, and all around a fun and enjoyable film.