In movies, "bad guys" usually fall into the state of "double pursuit". If a killer or policeman wants to commit suicide behind him, he must not only avoid these pursuits, but also muster up courage to pursue the person who has plunged himself into disaster, otherwise he will never get rid of crime.
In “the 39 steps”, Hannay's female spy was taken home from the concert hall, murdered and targeted by the murderer himself, while he was pursued by the police as a suspect. By this time Hannah had written down the secret that the female spy had told him, because she knew someone had accused a man of leaking defense secrets abroad. His escape must solve two problems: first, to prove that he is not a murderer; second, to prove that he is not a murderer, the leaker must be pulled out. So, the police and the murderer caught up with Hannah and Hannah approached the finger-breaker step by step.
When Hannay struggled to reach the Scottish countryside and find the injured finger, the situation began to deteriorate. This means that this person has no secrets of his own. This is a mild doctor. No one believed Hannah's words about spies. This means that this person will also kill Hannah in pain. Hence, Hannah lost track of her target for a time, until the end of the film, she got clues, changed her target, and restored the beginning of the film in London Concert Hall before she found the answer in Mr. Memory.
Escape and pursuit are the most important themes of "wrong people" movies. In the 39-step movie, the actors from the city to the countryside, from the train to the countryside, have not slackened from beginning to end, and have exhausted all tracing and anti-tracing techniques.
I like the scene switching in step 39 best. The film only lasts one hour and twenty minutes, but it contains more than ten scenes. One of my favorite parts is the climax of the film in half an hour. In about 10...