Tell your automobile dealer, or go to an auto-parts store. Ask an expert, basically. Don't go online and try to do anything yourself, because you could just be putting yourself in more danger.
I think this quote refers to A guard and a prisoner. The guard is the superintendent with the keys to the cell. He is standing by the prisoners door, and let the prisoner out into the lobby. I think the last part means that the prisoner got loose because he was first out the door.
