Okay so I chose to do a important scene from The Long Goodbye. It was the end when Marlow shoots his very good friend. At first I wondered why he would do such a thing but thinking back to our discussions it was because his friend used him. Apparently Marlow figured it out and so he set out to find him because he was the only person who believed he was not dead. They kept playing the same song over and over but once his friend was dead they played a much more upbeat and happy tune. It signified that he was "free" and that he didn't have to do deal with anything else bad that might have come his way if the friend kept on living in secret. It takes a lot of courage to do something like that but he did it.
I forgot what the line was that he said before the shooting but he even talked about his cat. Somehow the cat, who was fed and water, and then running away was related to his friend having him drive him somewhere. As I said before he used him and so did the cat. Also once he shot him there then was the close-up on Marlow's face. His expression was of he was sorry he did it but there was no other way or he didn't have a choice. He didn't want all of what did happen to him just because his friend was going into hiding because he killed his wife. He probably would've taken it if it was for a justifiable reason but it wasn't so he had to do what he felt was right and fair to him.