Let’s face it, “What makes a great screenplay?” is flat out the question all writers need answered. (Not the same as “want answered” because that question would be, “How do I get an agent?”
For the record, our answer to the agent question is, “Talk to your friends who are agented and see if they recommend theirs…and make sure their reason is that, “They’re selling me and my work!”
As for the great screenplay answer, well, who better to hear from on this matter than the writer/director/critic who has given us so many of them? Take it away, Mr. Scorsese:
Thirteen minutes of video that are worth more than their weight in gold.
From Yellow King Film Boy.