Movie set or real life? This cop didn't know...with almost-tragic consequences.

Police in Crawfordsville, Indiana, were recently alerted to an armed robbery at a local bar. With body cameras on, they arrived to find a masked man with a gun entering the establishment. One officer fired off a shot and missed. And thank goodness he did.

It turns out the "bank robber" was actually an actor in a low-budget film. He was filming a scene inside the bar and holding a toy pistol. The actor was taken into custody until it was confirmed that he was indeed playing dress-up.

The production company behind the movie says that they're working with local law enforcement to make sure something like this never happens again.