As Patricia swung around onto Mission, Laurence caught sight of 2333 1/3 Mission Street, the grungy old shopping mall that had concealed Danger and the Green Wing, except now half the building was defunct. The front walls, and a good portion of the interior, just pulled away. Like someone had taken a massive bite out of it. You could see exposed beams, struts, and supports on the torn floors, and even the frayed ends of carpeting. The superstructure at irregular angles to the rapidly slanting world. As they got closer, flame burst out of one of the front spikes on the T.D.S., unnaturally bright, the color of orange soda.

A man climbed out of the pit that was the front of the mall at 2333 1/3 Mission Street. Man-shaped, anyway. He was covered from head to foot, his entire body a pale crusty green like overexposed bread, and it took Laurence a moment to realize this was Ernesto, without all his charms and spells protecting him. Ernesto reached the sidewalk and groped for something organic to use as a weapon—the grass growing through the cement, trees in their metal cages—but the whole area had been defoliated. The T.D.S. fired its antigravity beam, with a pink hiss, and Ernesto shot upwards, many times faster than Priya had. And then he vanished. The ground shuddered and the noise damn near ruptured Laurence’s eardrums, even with the helmet.

All of this happened just as Patricia was racing toward the T.D.S. on her motorcycle. She pushed Laurence off the back of the bike, so he landed in a pile of trash bags, knees in his face. By the time he got his wind back, pulled off the helmet, and looked up, the motorcycle was leaping by itself and Patricia was nowhere to be seen. The motorcycle hit the T.D.S. in one of its telescoping legs and bounced off, landing wheels-up in the remains of the taqueria. The T.D.S. was pivoting, seeking targets, executing a flawless sweep, but Laurence couldn’t see Patricia anywhere.

She came over the side of the T.D.S., scuttling on her hands and feet over the carapace until she found a weak point. She reached into the join between sections of carapace and the segments of underbelly, with a look of total, easy concentration. She did not look like someone who had just watched all her comrades die but rather like someone who was doing a delicate task, delivering a baby, say, under challenging circumstances. Her shoulders tensed and her mouth pulled to one side, and then both of her unprotected hands went into the guts of Milton’s killing machine.

She roasted. She went rigid and then epileptic, as thousands of volts went through her. But she kept digging until she found the right bit of circuitry.