Director Letia Clouston has created a fan film entitled Demon In The Dark featuring Batman and a version of the Secret Six. Here's the official synopsis:
"They're not good at being good. A secret group of six must work together to deliver a "package" while evading an unknown predator prowling the dark streets of Gotham City. Is it a monster, an alien, or simply a psychopath on a rampage? Explosions, stabbings and gunfire quickly become part of the plan as the squad desperately races to the drop off point, leaving smoking piles of destruction in their wake."
Secret Six writer Gail Simone has endorsed the film on her Twitter feed. Check it out right here: