In the cellar, Rory finds little stone cherubs. As each of his matches burns out, leaving him momentarily in darkness, the cherubs move closer to him. It's kind of dumb that they giggle, when the other Angels are silent. Rory is frantic to make each match last. If I were him, I'd be thinking about taking off my jacket and setting it on fire. Upstairs, Grayle reveals his stupid reason for collecting the angels. Even though he's supposed to be so terrified of them, as a collector he just can't resist filling his home with them. He deserves to meet a grisly end for that stupidity alone, but that will have to wait. For now, he's knocked unconscious when the TARDIS blasts into the room. Before the Doctor goes out to see the missus, he makes a quick check of his hair and breath.
While Amy goes off in search of Rory, the Doctor catches up with River. She's a professor now, and a free woman now that she's been pardoned from prison. "Turns out the person I killed never existed in the first place," she says. "It's almost as if someone has gone around and deleted himself from every database in the universe." Skipping right over their "Doctor who?" joke... The Doctor realizes that to get River free of the Angel, he's going to have to break her wrist. He also realizes this was the scene Amy read from the book. After her fruitless search, Amy joins them. They decide that it would be safe to glance at the book's chapter titles. "The Dying Detective" is at the top of the page. "The Roman in the Cellar" gives them Rory's location. Amy runs off to rescue the hubby. As the Doctor continues reading down the list, he goes weak in the knees. The final chapter is "Amelia's Last Farewell." Suddenly determined to prove himself wrong, he demands that River find a way to free herself without breaking her wrist. "How?" she asks. "I don't know, just do it! Change the future!" he shouts.
He catches up to Amy in the cellar. No Rory. Just creepy cherubs. The hightail it back up the stairs. Meanwhile, Rory has been zapped to the street outside the Apartment Building of Doom. Now, the building is named Winter Quay, which was maybe not randomly chosen. Besides being a landing place, one of the characteristics of a quay is that it's built parallel to the shore. Parallel to the shore... parallel timelines. Anyway, Rory decides for some reason to go into Winter Quay. He could go anywhere, but he heads for the creepiest, deserted building in sight. When the elevator comes for him, as it did for Garner, he gets inside. People, do not take impeccably timed elevators inside of creepy buildings. Nothing good ever comes of it.