This is one of those aspects of being a screenwriter that I always struggle with - compellingly summing up my story in a sentence or two. It sounds like it should be easy enough, but a poor logline can be the Achilles heel of a great script. If you can’t sell it in a logline, no one will give it a chance.
Here’s an article from the Story Bodyguard on writing a clear, concise, compelling logline:
When you create your logline you are aiming for succinct and emotional. Choose active, colorful verbs. The action of the story is what creates interest.
The logline is about 35 words so every word must count to give impact to the story. This is your quick pitch whether written or verbal. Give it punch.
You need to know the basic beginning, middle and end of your story as well as the main theme (even if they change later) in order to write the logline.
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