Again, on four legs, she walks around the periphery of the room, sniffing where walls meet floor, and wondering which of the panels dividing the walls might conceal a door. Every panel is about the size of a door. Every panel looks and smells about the same. She keeps thinking that she must have missed something, some subtle clue at the very limits of her perception, but she’s been around the room more than a dozen times already and discovered nothing new.