How to write a letter to the editor ?!?

The John Wyndham novel? I'm at a loss for words. You summarize what you want to say, you say it then you summarize what you just said, same as any essay. You summarize what you want to say. You want to catch the reader's attention and tell them at the start whether they will agree or disagree with this. You don't have to go into detail. Just summarize. You say it. In detail. Any evidence you have goes in the main body of your letter. Start each paragraph with a summary of what you hope to accomplish in the paragraph then back it up. You summarize quickly at the end. This reminds people of your main points and removes any ambiguity about your point of view. Then you cut ruthlessly. Take out everything that is unnecessary. ESPECIALLY if you have to write a letter to the editor about the John Wyndham novel, I am sorry, I cannot go into more detail than this. I don't know what to say about it.