The Doctor jumps in slow motion, Ida lowering him into the Pit as he ruminates: "You get representations of the Horned Beast right across the universe. In the myths and legends of a million worlds. Earth, Draconia, Velconsadine, Dæmos. It's the same image, over and over again. Maybe that idea came from somewhere. Bleeding through the thought at the back of every sentient mind." Draconia from "Frontier In Space"; Dæmos, home of the horned Dæmon Azal in "The Dæmons," when the Third Doctor speculated that the Dæmons inspired ours. The Kaled God of War. The Oncoming Storm and the thing that meets it. "Emanating from here?" Who cares? "Could be." Ida wonders whether, if this is the original, that means it's the actual Devil Devil, though. Everything is true. Everything is permitted. When it's God, or the opposite, the Ood or the Devil or whatever wordplay you like, does it matter? "If that's what you want to believe," he (frankly) mealy-mouths. "Maybe that's what the Devil is, in the end. An idea." Just like you, and Rose Tyler, and Ida and Mrs. Moore, and you and I. The Doctor runs out of cable. Hits the end of his cord. Hangs loose. "Nothing. Could be miles to go, yet. Or...could be thirty feet. No way of telling." He thinks about it: "I could survive thirty feet." Ida knows -- does she hear you screaming at the screen? Does she know the unholy grace you're screaming? "Oh no you don't. I'm pulling you back up." She pulls, presses a button. Stops the Doctor falling. Pulls him back up. He presses something, stopping her. Do it. Jump. "You bring me back, then we're just gonna sit there and run out of air. I've gotta go down." Ida's good for a human but she's still human: the Doctor's the one who wakes you up. The secret angel voice that says Jump. "But you can't," Ida whispers, terrified. "Doctor, you can't." And it's not me talking: "Call it an act of faith." DO IT. He releases one of the hooks that secures him to the cable, where he dangles. Useless. That's Ida. "I don't want to die on my own," she says, scared out of her wits. You want to hug her, hold her, cosset. Kiss her goodbye. "I know," says the Doctor. He releases another hook. That's the Sanctuary Base.

Rose and the others reach Exploration, and she immediately snags the comm: "Doctor? Are you there? Doctor? Ida? Can you hear me?" Zach tells her that comms are still down. "I can patch them through the central desk and boost the signal. Just give me a minute." Too long. Jump.