Jack's grip on the metal piping tightened, and he slowly began to circle her, edging towards the desk and Ianto, though he rather suspected the younger man was able to defend himself.
"No." He gave her a brief and mirthless smile, expression hard, answering both her request to put the weapon down and her assertation she wasn't there to hurt him. It didn't matter - she was not friend, and right now, even here, he wasn't entirely certain he could, or wanted to, say that she wasn't foe.
"Who are you? Where are you from? Who do you work for?" The questions were barked out rapidly, no room in between for her to actually answer.