Lightning

clatter—then kicked again at his adversary's crotch, and with a grunt of pain, the man in black fell backward against the gatepost.
    By then Laura had stepped around the wheelchair and interposed herself between Chris and the killer. She reversed the Uzi, raised it overhead, and brought the stock of it down on the assassin's skull, struck him again with all her might, and he dropped to the lawn, away from the walk, without having had a chance to cry out.
    Events were moving fast now, too fast, they were on a downhill ride, and already Chris was going through the gate, so Laura followed, and they surprised a second man in black, eyes like holes in his white face, a vampiric figure, but this one was beyond the reach of a karate kick, so she had to open fire before he could use his own weapon. She shot over Chris's head, a tightly placed burst that pounded into the assassin's chest, throat, and neck, virtually decapitating him as it catapulted him backward onto the alley pavement.
    Brenkshaw had come through the gate behind them, pushing the wheelchair into the alley, and Laura felt bad about having gotten him into this, but there was no going back now. The back street was narrow, flanked by the fenced yards of houses on both sides, with a few garages and clusters of garbage cans behind each property, poorly revealed by the lamps on the intersecting streets at each end of the block, with no lights of its own.
    To Brenkshaw, Laura said, "Wheel him across the alley and down a couple of doors. Find a gate that's open and get him into somebody else's yard, out of sight. Chris, you go with them."
    "What about you?"
    "I'll follow you in a second."
    "Mom—"
    "Go, Chris!" she said, for the physician had already rolled the wheelchair fifty feet, angling across the alleyway.
    As the boy reluctantly followed the doctor, Laura returned to the open redwood gate at the rear of Brenkshaw's property. She was just in time to see two dark figures scuttle out of the areaway between the house and garage, thirty yards from her, barely visible, noticeable only because they were moving. They ran crouched, one of them heading toward the porch and the other toward the lawn because they didn't yet know exactly where the trouble was, where the gunfire had come from.
    She stepped through the gate, onto the walk, and opened up on them before they saw her, spraying the back of the house with bullets. Though she was not on top of her targets, she was in range—ninety feet was not far—and they dove for cover. She could not tell if she hit them, and she didn't continue to fire because even with a magazine of four hundred rounds expended in short bursts, the Uzi could empty quickly; and now it was the only automatic weapon she still possessed. She backed out of the gate and ran after Brenkshaw and Chris. They were just going through a wrought-iron gate at the back of a property on the other side of the alley, two doors down. When she got there and stepped into the yard, she found that old eugenias were planted along the iron fence to the left and right of the gate; they had grown into a dense hedge, so no one would spot her easily from the alley unless they were directly in front of the gate itself.
    The physician had pushed the wheelchair all the way to the back of the house. It was Tudor, not Victorian like Brenkshaw's, but also built at least forty or fifty years ago. The doctor was starting around the side of the place, into the driveway, heading toward the next major street.
    Lights winked on in houses all over the neighborhood. She was sure that faces were pressed to windows, including those where lights had not appeared, but she didn't think anyone would see much.
    She caught up with Brenkshaw and Chris at the front of the house and halted them in shadows near some overgrown shrubbery. "Doc, I'd like you to wait here with your patient," she whispered.
    He was shaking, and she hoped to God he didn't have a heart attack, but he was still game. "I'll be here."
    She took Chris out to the next street, where at least a score of cars were parked at the near and far curbs along that block. In the rain of bluish light from the streetlamps, the boy looked bad but not as awful as she had feared, not as frightened as the physician; he was growing accustomed to terror. She said, "Okay, let's start trying car doors. You take this side, I'll take the far side. If the door is open, check the ignition, under the driver's seat, and behind the sun visor for