"I see" she said thinking and looked to the Doctor when he yelped spotting something else was there and hissed a little but it seemed to move away rather quickly. She went over and looked to his arm checking if anything was there as well as looking him over before she checked the TARDIS "Any idea what it could be?" she asked "it's not visible to the naked eye, it smells quite funny I can tell you that and it bites people"