Arwen took the screwdriver back and put it in her pocket where it belonged, listening to the Time Lord before her. Jack turned his attention to the Doctor upon hearing his curiosity. He walked over to Arwen, soon standing before her. "May I?" Arwen took a deep breath, nodding as she closed her eyes. Jack put two fingers to her neck to feel for a heart beat. To his astonishment. There were the sound of two heart beats. "She is a Time Lord." Arwen opened her eyes to look at Jack with a surprised expression. "T-two hearts?"