Kansas City filmmaker Don Maxwell has made a short on Bierce's The Story of a Conscience. It's playing during the KC Jubilee, whenever the hell that is. You wouldn't expect the Jubilee site to post dates or times.
If you Google your way into a certain cache, you can see a plot summary of this super secret project:
Local filmmaker Don Maxwell has delivered a stunning 22-minute drama based on an Ambrose Bierce short story set in the Civil War. A Union officer (Nick Piper) captures a Southern spy (Eugene Wolf) and must order the man's death. But during the night before the execution, the two men reveal their linked pasts, raising questions of forgiveness, responsibility and sacrifice.
A story of a spy, and you'll have to be one to dig up more than I've presented here.