My phone flashed a silent alert: *Perimeter Breach: West Entrance.* I was in the soundproofed control room beside the main studio, watching the night-vision feeds. Elena had taken the door I expected. On screen, Elena's designer dress was torn and her hair hung across her face. Two heavy men followed her between the display stands. She grabbed a bronze bust in both arms and raised it over the restored Titian. “If I can't have him,” she screamed through the microphone, “then you can't have *this*!” I pressed the red button on the console. Reinforced bulletproof glass dropped from the ceiling and sealed the main gallery. The bronze bust hit the glass with a dull clang and bounced onto the floor. Elena spun around and tried the doors. They did not move. I switched on the intercom. “Th

