Like some biological creatures–but unlike humans–she was sensitive to the electromagnetic spectrum from the near infrared into the ultraviolet. Like a few other species of naturally evolved living things–but unlike humans–she was sensitive to electric and magnetic fields of much higher and lower frequencies, and of almost vanishingly weak fluxes.
She did not have the one benefit radio could have conferred in her present desperate situation. A brief burst of targeted microwaves, however faint, would have appeared as a small, bright blip in the sensor field of an orbiting satellite, pinpointing the exact position of the downed marsplane. She had been deprived of the ability to make such a blip, and she did not think that was by chance.
From what she had seen it appeared that the marsplane must have been crippled by a powerful broadfrequency pulse that had fried the onboard sensors and computers–and at the same time had ruptured Sparta’s only nonbiological function. Until she inspected the plane she would not know whether the source of the pulse had been onboard or beamed from outside. Nor would she know whether it had been planted and triggered by a person unknown or by Khalid himself.
Why had Khalid taken the plane apart? To keep it from being destroyed by the wind. Why would he bother, if he only wanted to kill her? Because, of course, a tragic accident must seem perfectly accidental.
She lay back in her harness and concentrated on the fire under her heart, trying to dispel it by
entering
it. But too soon the pain overwhelmed her conscious mind, and she slipped back into fitful sleep and lurid dreams.
To the west a huge shield volcanco, Ascraeus, rose from Tharsis into the Martian stratosphere. On Earth nobody would have noticed it, not from this angle; one can stand on the side of Mauna Loa, the largest volcanic mass on Earth, and not notice anything more impressive than nearby trees and rolling hills and a mildly tilted plain, so gentle is its slope. Here on Mars the much bigger volcano made its presence known only by the lava flows and raveling arroyos at the hem of its skirt.
Lydia had reassumed her customary taciturnity. The morning had passed in silence except for the nowfamiliar whine of the turbines, transmitted through the truck frame. Blake sat on his side of the cab, brooding.
There were no more cards in his deck. He’d tried charm. He’d tried competence–gone so far as to save her life, probably–but nothing was going to make her loosen up. Lydia Zeromski was a tough cookie.
Blake slouched in his harness listening to the hissing turbines and the grab and scurry of the treads against the sand. He’d assimilated some novel sensations on this trip. He’d slowly learned the different feel of rock and lava and sand and desert quicksand and rotten permafrost, each texture translating itself into subtle superimpositions of vibration as they passed beneath the traveling treads. Now he became aware of something new–a rhythmic heave and rumble quite out of synchronization with the rhythms of the treads.
They were crossing a wide alluvial fan at the base of the distant volcano, a thin spreading sheet of pebbles and boulders sorted by weight, of terraced sand and packed conglomerate cut through and exposed by intermittent floods of liquid water. Blake, trusting the texts he’d hastily absorbed during his journey to Mars, had placidly assumed these water-carved features to be a billion years old. Looking out the cab of the speeding truck, he now acknowledged what he’d seen but not believed: the sharply sliced contours of fresh erosion.
“Volcano. Outgassing melts the permafrost into a slurry and it rolls down any available channel. We’re in the middle of a big one.” She glanced up from the wheel. “Listen, Mycroft, when I say jump, you jump. Grab a couple of rock bolts and winch cables and get as far forward as you can. Don’t worry about good rock, you won’t find any in this gravel, just get out front a hundred meters or so and shoot the bolts as deep as they’ll go. Tie off. Cross your fingers they hold.”
She found the midstream island she was looking for a few moments later and pushed the truck up and over its shallow bank. Then she swerved the whole rig around to face upchannel, into the approaching deluge.
As the truck skidded to a halt he jumped and ran. A second later she was out of her side of the cab and running out parallel lines. He found an enormous basalt boulder and figured that it was worth more than a steel bolt sunk into gravel, so he looped the winch cable around it. He planted two more bolts and tied off the cables.
A seven-meter wall of slush the color and consistency of melted chocolate ice cream was bearing down the channel, carrying whole boulders with it. He turned and ran for the truck. Lydia was ahead of him. He saw her climb in and struggle to secure the damaged door on her side of the cab, then reach across to his. Nice of her to open it for him.
“Lydia, the door’s stuck! Let me inside!” The wall of mud was coming at him like a miniature flood in a cheap viddie, shot in slow motion. This was no miniature. Billows of steam poured from the improbably high crest of the wave–hot water from the melted permafrost was vaporizing instantly as it was exposed to the dry, thin atmosphere.
“Yevgeny was waiting for you in the yard, Mycroft–he thought you were going to blow up the yard so they wouldn’t send you to the pipeline. But it seems you
do
want to go to the pipeline. What we want to know now is why.”
Blake looked at the steaming face of the flood, its tumbling wings now spilling around the banks of the shallow braided channels that flanked the midstream island, carving new miniature cliffs in the sand as it came. The agonizing slowness with which it approached was almost more horrible than the onrush of an earthly flood.
He thought about it for a couple seconds and couldn’t think of anything more that he had to lose. “My name’s Blake Redfield,” he said. “I’m working for the Space Board on the murders of Morland and Chin. I needed to get close to you, to find out about you.”
“They think
I
killed Dare?” “You had opportunity, Lydia. You had to be a suspect, and somebody had to check you out. I volunteered.”
What had been an enormous wall of water a minute ago was now a low-running slurry. It reached the marstruck as Blake watched; wavelets of semisolid slush lapped over the treads and dirtied his boots, but they carried no more force, and before the flood had run the length of the truck it had subsided into a smooth layer of fine ash and dirt. For a while the hot mush, like a pyroclastic flow on Earth, had sustained itself on steam; now all the moisture which had lubricated the flow had evaporated and nothing was left but a deep layer of those fine particles which covered so much of the dry surface of Mars.
Lydia lapsed into her characteristic meditation, fixing her eyes on the horizon of the endlessly unfolding landscape. She looked at Blake only once, a few minutes after they had resumed their journey across the alluvial fan. “What did you say your name was?”
He told her. When she said nothing more, he lapsed into his own reverie. He watched the sand hills slide by and thought about how badly he’d botched this assignment he’d insisted on giving himself. Botched it right from the beginning. The reasons for everything that had happened to him since he’d become Mike Mycroft were suddenly obvious.
He knew why he’d been attacked outside Mycroft’s hotel on Mars Station and how Yevgeny had gotten rid of his attackers so swiftly–they were Yevgeny’s own people, and he’d told them he wanted this Mycroft character to himself. That’s why Yevgeny had befriended him, gotten him a job, waited for him in the marshaling yard. Yevgeny had set him up.
They’d known about Mycroft for months, Lydia had said. Which meant that Michael Mycroft
was
a species of fink–a false identity the Mars Station office of the Space Board had used once or twice too often.
Just before they climbed out of the channeled terrain and moved on into the higher desert, they passed the blackened skeleton of a marstruck which had not made it across these alluvial sands. Looking at its twisted, ragged frame, half buried in sand, Blake wondered if Lydia really would have let him inside had the flood not dissipated itself too soon. Or was she waiting for a better chance to stage the perfect accident?
The outward form of the shape on the tree was human, a girl not quite grown to womanhood, hanging from the branches of the dead tree. They had nailed her to the tree with splintered bones–arm bones and thigh bones. Her belly was split from breast bone to navel and the cavity was empty, dark, and red.
In her oval face her brows were wide ink strokes above eyes of liquid brown. Her unwashed brown hair hung in lank strands against her pale cheeks. She turned her liquid eyes to hold fast Sparta’s gaze with her own.
The face upturned to her twisted and melted. The eyes of the face flared with light, and when the flare subsided the eyes were pale, the thin lips were full and parted, and the dark hair had lightened to the color of sand.