>>80942753Pay attention. He sent one of his old boys from Frank's unit to kill Frank at the pier, the one with the burned face.
Karen told him that she was at the pier, watching the cops handle the bodies of the guys Frank killed at the pier. Then she's fixated on the picture of the guy with the burned face.
He pulls out the gun because he's aware she just found out he sent the guys to kill Frank.
Not only that, he had already ordered his men to kill Karen at her house, when Frank rescued her. He was always gonna kill her.