Stephen let out a loud, exasperated sound and switched on the car’s lights and sirens. Then he hit the gas, and I was thrown back against the seat by the surge in speed. I could basically determine that we were going west, into the center of London. Within a few minutes, I realized that we were headed toward Goodwin’s Court. When we got there, Stephen pulled the car over abruptly. I had to wait for him to let me out of the back, then he hustled me down the alley and into his building. The automatic lights clicked on as he hurried me up the stairs.

“I have to ring someone,” he said, switching on the overhead light. “You should sit.”

Stephen went down the short hallway and into the room next to the living room, leaving me alone for a moment. The apartment was cold, and it smelled stale. There was a bag of used takeout cartons by the door filled with the remains of Chinese food and fish-and-chips. Clothes were strewn about the sofas and chairs. There had been some kind of paperwork explosion over by the window—masses of manila folders turned open, pages piled and stacked and spread out. All the notes on the walls looked like they had been replaced with new ones.

I could hear Stephen through the thin wall. He was talking to someone very urgently.

“How’s Boo?” I asked when he emerged.

“I don’t know yet. I have someone at the hospital who’ll send me a report. Your school has been told that you’re with the police giving a statement. You need to sit. We have to talk.”

“I don’t want to sit. I want to see my roommate.”

“She’s not your roommate,” Stephen said. “She’s a police officer. And the one thing you can do to help her is to tell me what you know.”

“She’s still my roommate,” I said.

Which was odd. Because not long before, I would have sold Boo to the lowest bidder. Now her welfare was the only thing that mattered.

“Do you want to help her?” Stephen asked. “Then you’ll tell me everything.”

He indicated the sofa. I sat. He pulled up one of the chairs and sat directly in front of me, leaning forward to look me in the eye, as if he could tell when I was leaving something out by studying my pupils up close. I had been grilled by the police before. At least that experience had prepared me for this.

“The school was having a dance—” I said.

“I know,” he cut in.

“You told me to tell you everything,” I snapped. “So are you going to listen or are you going to tell me what you already know?”

Stephen put up his hands, conceding the point.

“Go on,” he said.