S2·E20 Bad Paper

Three teenage boys pull off a burglary in a small grocery store that one of the boys had worked at. When the safe is open they discover a huge stack of bills wrapped in brown paper. They grab the money and take off. The Knights are in the area when the store's silent alarm goes off and catch one of the boys as they escape, but store owner refuses to press charges. It turns out the stolen money is fake, and the mob sends in a 'button man' to tie up loose ends and take care of the teens. The Button Man kills one of the teens, and uses another to draw out the third one. The ending comes in a shoot-out between the Button Man and Joe on the 19th floor of a building under construction.