There was less blood than she had expected. Before she could examine the two wounded, Hyacinth floated past and Sarah followed. They ran to the elevator lobby, where Lucy was waiting with an elevator and another gun. That was what had taken so long– an elevator! But many Terrorists were pouring into the lobby as the doors began to creep shut. A Terrorist glided toward the wall buttons, hoping to punch the doors open; Sarah made eye contact with him; he kept going; she fired a shot whose effects she never saw. The doors were closed, joining in front of them to form a Big Wheel mural. The car was motionless for a sickeningly long time, and then shifted and began to sink.

Casimir Radon only came in at the end of it. He had gotten up earlier than any of us that morning. Opening his curtains to let in the gray light, he had seen the blind patches grow, and had put on his glacier glasses before allowing any more light past his eyelids. He lay in bed until the blind spots had shifted over to the right side of his vision, then read some physics and tinkered with the railgun's electronics. Finally he went to lunch; but seeing the outbreak of violence there, he headed back up the stairs to look for Sarah, meeting me and Krupp. After we parted, he continued resolutely. placing his feet as gently as possible on each tread and pressing carefully until he moved up to the next step. As a result he moved with a smoothness that was not even noticed by the little embryonic headache in his brain.

A few seconds after leaving us behind, something flashed by him down the center of the stairwell, and a second later– accompanied by a brief stabbing light– came a sharp awesome KABOOM that KABOOMed many times over as it bounded up and down the height of the stairwell. To Casimir it was like being bayoneted through the head, and when he dared to move again, the headache struck so badly that he could only laugh at it. He proceeded toward the Castle in the Air with a helpless moaning laugh, heels of hands buried in temples, and heard other, less tremendous explosions.

The door to E12S was open and three Terrorists were running through in a panic, headed for thirteen. Something white flashed by the door, heading for the lobby. Casimir ran into the hall and was promptly knocked aside by a migration of Terrorists, who emerged from several nearby rooms. Falling, he glimpsed Sarah and Hyacinth, clad in white long johns, running with guns and backpacks down the hall. He managed to trip a few of the Terrorists, more by flailing away randomly than by craftiness, and stood up and began to head for the elevators too. As he approached the lobby, there was another painful WHAM and he felt a sharp pain in his chest. He had no idea what had happened. In fact, Sarah's last bullet, after ricocheting off several walls and passing through a fire door, had in mangled form dispersed its last bit of energy by bouncing sharply off Casimir's T-shirt.

Something hard was against the back of his head– the floor? The Terrorists were standing above him. He stood up. Two wounded men were being carried toward him, leaving uneven trails of blood on the shiny tile floor. He followed these trails to their sources, and stepped through Sarah's open door.

A clown-cadaver was smiling at him through the window and he knew he was hallucinating. Nothing he did could dissolve the ghastly sight. Noticing a Terrorist looking at him from the doorway, he walked over, slammed the door in his face and locked it. Then he wandered around the room, picking up and examining random objects– numerous mementos of Sarah's friends and family, books he would never read, a little framed collection of snapshots. A family portrait, graduation photos of several smiling good-looking earnest types– which was her boyfriend?– and various shots of Sarah and friends being happy in different places, including some of Hyacinth. Tucked in one corner of the frame was a folded piece of paper. Casimir felt filthy reading it; it was obviously a love note. He had never gotten one himself, but he figured this was one of them. Getting to the bottom, he read the name of the mysterious man Sarah so obviously preferred to Casimir: Hyacinth.

He sat on her bed, elbows on knees, scarcely hearing the shouting outside. He smiled a little, knowing Sarah and Hyacinth had made it out safely.

He knew why he'd come up here. Not to assist Sarah, or go with her, but to save her. To create a debt of gratitude that could neither be erased nor forgotten. She would have to love him then, right? This impossible secret hope of his had made his thoughts so twisted and complicated that he no longer knew why he was doing anything; he was never one to analyze his pipe dreams. But now she was safe. His goal was accomplished. And if she had done it herself, and not seen him, then that was his fault. She was safe, and now he had to be happy whether he wanted to or not.

Most importantly, he had seen the proof he had needed for so long, the undeniable proof that she would never be in love with him. All his wild fantasies were impossible now. He could purge himself of his useless infatuation. He could relax. It was wonderful. The Terrorists shot out the lock, came in and grabbed his arms. In the hall he was thrown on his back and straddled by a Terrorist while others sat on his arms and legs. Then they all stared at him dully, lost and indecisive.

"Let's knock his teeth out," said a voice from behind Casimir. A hammer was given to the man on his chest. Someone held Casimir by the hair. Casimir's vision was sharp and bright without the glacier glasses; the hammerhead was cold and luminous in the white light, finely scratched on its polished striking face, red paint worn way from use. The Terrorist was examining Casimir's face as though he could not find the mouth, neither excited nor scared, just curiously resigned to what he was doing and, it seemed, at peace with himself.

This is what I get, being heroic for the wrong reason, thought Casimir. He could not take his eyes off the hammer. He began to struggle. His captors clamped down harder. The torturer made a swing; but Casimir jerked his head to one side and the blow slid down his cheek and crushed a fold of neck skin against the floor.

Then he felt a light tingly feeling and sat up. The hammerer slid backward onto the floor. Casimir's hands were free and he punched the man in the nuts, then pulled his legs free and stood up. Everything he touched now snapped away and started bleeding. Someone was coming with a shotgun, so Casimir re-entered Sarah's room and bolted the door with her police lock.

He smashed the photo frame on her desk, removed a snapshot of Sarah and Hyacinth, wrapped it in Kleenex and put it in his pocket. The only potential weapon was a fencing saber, so he took that. He knocked over a set of brick-and-board shelves, and using one brick as a hammer and another as an anvil, snapped off the final inch of the blade to leave a clean, sharply fractured edge.

When he opened the door again, all he had to do was push the barrel of the shotgun out of the way and push his saber through one of the owner's lungs. The gun came free in his hand and he hurled it backward out the window, where it bounced off the cadaver and fell to Tar City. In the ensuing melee Casimir slashed and whipped several Terrorists with the blade, or punched them with the guard, and then they were all gone and he was walking down the stairs.

His destination was a room in a back hallway far beneath A Tower: University Locksmithing. This was the most heavily fortified room in the Plex, as a single breach in its security meant replacing thousands of locks. It had just one outside window, gridded over by heavy steel tubes, and the door was solid steel, locked by the toughest lock technology could devise. As Casimir approached it, he found the nearby corridors empty. The security system was still on the ball, he supposed. But the events of the day had unleashed in Casimir's mind a kind of maniacal, animal cunning, accumulated through years of craftily avoiding migraines and parties.