In this scene Lennie tries to touch the girl's dress. The girl misinterprets Lennie's actions and screams.
In this scene Lennie and George are talking about going to the ranch after escaping the trouble in Weed. They sit and discuss their American Dream.
In this scene George, Lennie, and Candy talk about how they are going to make their American Dream come to life. They talk about how they are going to pay for it and what they will do once they get it.
In this scene Curley picks on Lennie because he finds that he is an easy target. Curley then starts hitting Lennie and Lennie doesn't fight back so George tells him to defend himself.
In this scene Curley's wife and Lennie are talking and Lennie tells her how he likes to touch soft things so she allows him to touch her hair. After a while she starts to feel uncomfortable so she tells him to stop but he doesn't. She starts to scream and Lennie gets angry so he shakes her and breaks her neck accidentally.
In this scene Curley and his men go after Lennie so George decides he has to find him first. He doesn't want to later regret letting someone else kill Lennie just how Candy let a stranger kill his dog and later regretted it.