Nancy sings "Rock-A-Bye Baby" to Jenkins, whose gas-masked head is on the table. The door creaks open, and Nancy and the Doctor communicate silently: he, that she should continue to sing and care for the kid; she, that she's handcuffed in there. Girl, I feel you. She keeps singing, and the Doctor sonics her cuffs, as Rose and Jack watch from the door. Soon enough, they take off from the shed, leaving Jenkins fast asleep.
Back at the bomb site, the Doctor and Captain Jack uncover the tarped transport, as Nancy and Rose look on. "You see? Just an ambulance," says Jack. Rose tries to explain to Nancy how it's an ambulance from another world, as Jack's discovering that Algy's men have been trying to get inside it. "Of course they have," says the Doctor, in his "you stupid apes" voice. "They think they've got their hands on Hitler's latest secret weapon. What're you doing?" Jack says he wants to open the thing up so that Algy's men will see that it's empty. His need to prove...that says more to me about the Doctor than it does about Jack. Jack fucked up and wants to clear his name, but it's not like anybody in London is going to talk. But you meet the Doctor, and then you redeem yourself. Those are the rules. The keyboard on the ship's lock pops with sparks, and they fall back. The Doctor realizes that it's emergency protocol, now that the ship's actually crashed onto a planet. A red light on the control panel blinks at them.
The child stands alone at Albion Hospital, and we zoom in: "Mummy?" Something has changed again. All the masks in the hospital climb out of their beds and make for the front door.
At the bomb site, the masks from closer in start to rattle the gates. The Doctor hurls orders: he tells Jack to secure the gates, and sends Rose and Nancy with his screwdriver to repair the hole Nancy made: "Setting 2428-D: reattaches barbed wire. Go!" That's funny. Jack slams the gate shut.