Is it possible to sell a script on a title alone? Rarely but yes. People have done it but even if you aren't an A-list screenwriter, you can at least get people interested in your book or screenplay by stating the title alone if it's a high concept title. The title followed by a magnificient logline will get you read. Below are tips excerpted from the book, "The #1 Secret to Sell Your Screenplay to Hollywood".
4. Intriguing. Makes people wonder what or who the story is about. Will the title you’re considering make readers ask questions, questions you answer in your story?
5. Tantalizing. Makes your title irresistible.
6. Memorable. Titles should be easy to remember. The catchier the better.