Back in the junk pile, the Doctor closes his eyes and tries to focus on the location of the Time Lords. He walks over to a niche and pulls its curtain aside. Noting that it's too small for more than one or two Time Lords, he turns as though he's going to look elsewhere. But then he hears the voices again, and opens a cupboard that is painted TARDIS blue. And inside he finds a whole collection of Time Lord message cubes, each repeating a different distress call. He realizes that Uncle and Auntie have crept up behind him, and he congratulates them on their excellent collection of Time Lord distress calls. He realizes that the messages in the cubes where what the Ood speech globe was picking up -- "cries for help from the long dead." He asks the two of them how many Time Lords they've lured in, just like him. Auntie tries to justify what they've done by noting that House gives them a place to stay without charging rent, so they feel obliged to help him out when he asks. I've done some couch surfing in my time, and helped friends with some pretty crappy chores in exchange for their hospitality. But I've always drawn the line at luring strangers to their doom. But maybe I'm just too uptight. Anyway, this is when the Doctor gets angry, and points out that he's realized that Auntie and Uncle are stitched together from pieces of other beings. So that Uncle has one human ear and one alien ear, and eyes that are much younger than the rest of him, and two left feet. And Auntie's giant man hand? It's part of an arm that has the Corsair's Ouroboros tattoo on it. (The Corsair's spine and kidneys are currently residing in Uncle.) Doctor: "You gave me hope and then you took it away. That's enough to make anyone dangerous. God knows what it will do to me." But even though he's full of rage, he gives them a sporting chance by telling them to run. Auntie takes off like a jackrabbit, but Uncle backs away more slowly, telling the Doctor that House is far too clever to be defeated. And then the Doctor's phone rings. Amy tells him that there's no sign of the screwdriver and that the door of the TARDIS locked itself behind them. She thinks he did it to get them out of the way. And suddenly the Doctor realizes that Idris predicted that the boxes would make him angry. He tells the two of them to stay put, hangs up, and runs off to find Idris.