This is an intelligent feature script, too far ahead of its time for 1940s Hollywood. It would be great to see Jane Campion, Sarah Polly, or Kathryn Bigelow, or even Mira Sorvino makes this script into a film. With the right touch, the shifting elements in the script, and the faceted characters, and social pressures of the time period could be developed into a hit.
“Raymond Chandler's Unknown Thriller: The Screenplay of Playback” is part doomed love story triangle, part murder mystery, part police procedural, this screenplay has a natural feel for contemporary cultural role models and the changing archetypes of film fiction.
Betty and Brandon and their magnetic attraction has a too-good-to-be-real feel, and this element pays off at the end of the story. Betty and Killaine, as the opposite side of the love triangle certainly feels right within an accepted Hollywood paradigm and the tentative nature of their relationship gives the script a quality that would have appealed well to an auteur like Howard Hawks, or even Alfred Hitchcock.
The character of Betty is the main issue in that she is damaged. She is too tough to love by our good cop Killaine, and too good to mate with our bad local hero Brandon, so in contemporary attitudes, she makes a perfect female lead character.