CHARLESTON, W.Va. (WSAZ) -- When we cover bank robberies, we can only show what’s going on outside the building.

The investigation going on inside is something only seen on crime shows. While we can't dramatize a crime scene, NewsChannel 3 goes to the experts to find out what is going on behind the yellow tape.

No matter which bank, robbery scenes tend to look the same. Suspects they think they can get away with the crime, but more than often they are proven wrong – proven wrong because of detectives cracking the case behind closed doors.

Earlier this week, a postal code led police to an alleged pair of robbers. But when the clues aren't that clear, science and CSI know-how, help move things along.

The video surveillance image has a lot to not only do with developing a picture of a person to broadcast over the news media, but it also allows law enforcement to determine where the person interacted.

Bank robbery is a federal crime that comes with a 10- to 20-year prison sentence.