A half hour later, with a rumble of the big Caterpillar engine and the rattle of chains, Oilcan returned to the yard. He had his tow lights on and a small shrub stuck in the flatbed's ram-prow.

"Tinker?" he bellowed as he swung out of the cab, a crowbar in hand. "Coz?"

"Here am I." She came out into the yard, the dent mender in hand.

Tinker and Oilcan favored one another, which sometimes made Tinker wonder about her egg donor. She knew that her grandfather had selected her mother mostly on intelligence—he could be quite vocal about his scheme to raise a genius grandchild—but she wondered occasionally if he had also tried to make it so that she and Oilcan looked like brother and sister too. Oilcan was just shy of average height for a man, slender built as she was, with the same nut-brown coloring. When they were little, Tooloo had called them her wood sprites. Tinker always thought the overall effect worked better on Oilcan; he had a spry puckish kind of look—what people used to think of as fey before they met the real elves.

Oilcan stopped at the sight of the blood on her, his dark eyes going wide and solemn with concern. "Oh, shit, Tinker—are you okay?"

"Fine, fine. Most of it isn't mine. Windwolf is chewed to hell. Someone cooked up a pack of monster dogs that—" She stopped as implications finally seeped in. While created for a war waged millennia ago, the wargs now ranged wild, for all purposes a natural creature despite their magical enhancements. Simple bad luck could account for a warg attack. Windwolf's mauling, though, was clearly an attempt of premeditated murder. Someone had made the monster dogs, taking days to set up the original spell and then copy it onto the five pug dogs. "Someone sicced a pack of killer dogs on Windwolf."

"Windwolf? Not the elf that marked you? That's bad, isn't it? Is he still alive?"

"Barely. We have to make sure he stays that way. Jonnie was here. He wouldn't do anything for him, and he says that Mercy won't touch him."

"The hell they won't. Not everyone is a self-serving bastard like Jonnie. We can take him over and someone will take care of him. It's not like they're going to let him bleed to death in front of them. Is it?"

For a moment, she thought she could let him take charge. Then she realized that he was waiting for her to say yes or no. The problem was that Oilcan knew she was smarter than he was. He had a lot going on upstairs, but he always deferred to her. She was never sure if it was because she'd played too many head games with him while they were growing up,or if it was some crippling fear of failure. He had been ten before falling into her grandfather's care and can-do style of child raising, and it showed. He was four years her senior, but still he was more than willing for her to be the boss.

Of course, that had drawbacks.

"I don't know!" She retreated back to the workshop to check on Windwolf, finding him unchanged. Oilcan trailed behind her, waiting for her to think of something. "Certainly if we can't think of anyone else to help with Windwolf, we can take him to Mercy. Can't hurt. Might help."

"Who the hell else is there? Tooloo?"

"She stays on Elfhome on Shutdown. Let me think." Tinker bounced in place. Weird as it seemed, sometimes bouncing helped, like her brain just needed to be jostled around so a good idea could surface to the top. "Elf. Heal an elf. Elf healing. Elf biology. Xenobiologist! Lain!"

Oilcan studied the setup around Windwolf. "How are we going to move him? You need to take the power sink, and that's nearly five hundred pounds there alone. I don't know if the two of us can move it."

She considered the sink, the pale battered elf, and all the blood. "We'll just take the workshop trailer, load it onto the flatbed."

"You've got to be joking."

"That's how we got it here in the first place."

"Shit, but up to the Observatory? And we don't know if she's even home. The phones are still out."

"She's usually home on Shutdown Day," Tinker said. "She transmits data from her home computer. If she's not, well, we'll just drive on to Mercy Hospital. If they won't take him, I don't know, maybe we'll drive out to Monroeville and see if we can find a vet."

"Monroeville? You mean drive to Earth?"

"We are on Earth."

"We're in Pittsburgh," Oilcan said. "Pittsburgh hasn't really been part of Earth for a long time."

"Yeah, we'll go to Earth if we have to."

It took longer than she thought to fill up the flatbed's gas tanks, jury-rig a power supply for the trailer, disconnect the city's power connections, rig a sling under the trailer, and use the crane (magnet turned off) to lift the trailer carefully onto the flatbed and secure it. She made sure that they had Windwolf's sword and pistol; if he lived until Startup, they'd deliver him and his weapons to the nearest hospice. Tinker found the abandoned cancel spell, folded the paper carefully so the rune itself wasn't creased, and tucked it into her front shirt pocket. If things went wrong, perhaps the spell could still work after Windwolf died, severing any magical bond between them.

The trailer's now-empty air-conditioning slot conveniently fit up against the flatbed's back window, allowing her to crawl between the trailer and the truck's cabin. Oilcan would drive, being the more cautious of the two of them, and certainly also the more patient. Tinker made sure everything was green with Oilcan, then slithered through the hole to ride beside Windwolf.

"What is happening?" Windwolf peered through slit eyes, his voice paper-thin.

"We're moving the trailer to someone that can help you."

"The house is moving?"

"Yes."

He closed his eyes and exhaled a very slight laugh. "And you humans used to think of us as gods."

The Allegheny Observatory sat high on a hill, deep in an old city park. A steep and twisty road wound up to it. In the winter, the road made an excellent bobsled course. In the middle of the rainy night, in a teetering trailer, with a dying elf, it wasnightmarish. The Rim, however, cut through on the other side of the park, taking out one vital bridge to a saner route.

At the turn of the millennium, the district of Observatory Hill had apparently been struggling; the gate effect, and the loss of the bridge, had killed it completely. Whereas in other parts of Pittsburgh, the Rim remained a sharply marked borderline between Elfhome and transported Earth, here a young forest of Elfhome trees, a mile in from the Rim, stood in testament to how much of the neighborhood had been lost. None of the houses had actually been torn down; a scattered number still stood, lurking like undead under the trees. Some of the buildings had caught fire, whole blocks burning to rubble before the fire department could check the blaze's progress. The rest had just been whittled away: the windows, the doors, the sinks, the toilets, the copper pipes, and finally the nails. Little by little, they'd been looted by those desperate for finished building materials. Soon only sodden white piles of plaster would be left.

Now Observatory Hill was just a commune of scientists huddled around the Allegheny Observatory bulkhead. A hundred years ago, the area had been moneyed, and stately Victorian homes remained, refurbished to act as dorms for the transient scientists. Mean age hovered at twenty-seven, postdoctorate but still under the authority of older, well-established scientists on Earth. Every thirty days the population changed. Because of the Observatory, lights were low, but always on. The astronomers studied the parallel star system during the night. Xenobiologists studied the alien life during the day. They shared resources of backup generators, kitchen facilities, cooking and cleaning staff, and computers.