Holden must have been feeling greatly more stressed than his subtle tells let on, as even Izzy's small, harmless movement of pulling her jacket to the side triggered a reaction from him. He brandished his knife at her, holding it out with two shaking hands in a posture that was neither definitively offensive or defensive. His gaze darted between her face and her scars, his expression tightening as he visibly processed this information. The knife was really not a great threat, if Izzy was thought about it. While getting stabbed in the gut or slashed in the face would be a serious wound, a little nick with that would heal in less than a minute. "I don't know what that's supposed to prove," Though he had just shown how jumpy he was, his voice remained surprisingly level, as though he was still in command of the situation. "You're wearing my patience thin."