"How could I not know it's you, Doctor?" Jack retorted, smiling widely. He went over to open a cabinet and pulled out the container with the Doctor's hand in it. The liquid was bubbling and even seemed to glow with its own light. Jack looked at Martha and the Doctor.
"Well there's this... and besides, we have a picture or two of you at Torchwood. We got them from websites before shutting them down, you see."