As reported in Armed robber asks for money, flees empty-handed, Madison police say. (Madison.com, 4/28/2016)
The suspect displayed a black handgun and demanded money from the clerk, but when the clerk told him there wasn't any, he ran from the store.
Speaking of which.....
Here's a trailer, of sorts, from He Ran All the Way, a taut little (67-minute running time) film noir from 1951, starring John Garfield and Shelley Winters.
They just don't make them like they used to.
Here's a 3-minute clip.