The Doctor couldn’t shake the image of Turlough falling from the train, eyes wide with fear. He wasn’t sure what the pack had done to him, but he could guess. Others had exploited Turlough’s psychic vulnerabilities in the past, although few had the wolf-people’s skills. He should never have left Turlough alone. He could practically hear Tegan yelling in his mind: “You’ve done it again, Doctor! Lost him, like Nyssa, like Adric…”
No, he thought, Turlough could still be alive. He needed to find him. The Doctor made sure Ileana and the others were distracted and began planning his escape.