“Deactivate it,” Tenebrous said. “At once.”
The hammering slowed and eventually ceased, but not for long.
“The Em-Two unit has overridden my command.”
“Impossible,” Tenebrous said.
“Clearly not, sir. In fact, it is highly probable that the unit is executing a deep-seated subroutine that escaped earlier notice.”
Plagueis glanced at Tenebrous. “Who procured the probe?”
“This isn’t the time for questions. The probe is about to breach the pocket.”
Hastening to the rim of the circular shaft, the two Sith removed their gloves and aimed their long-fingered unprotected hands into the inky darkness. Instantly tangles of blue electrical energy discharged from their fingertips, raining into the borehole. Strobing and clawing for the bottom, the vigorous bolts coruscated into the lateral corridor the probe had excavated. Crackling sounds spewed from the opening long after the Sith had harnessed their powers.
Then the repetitive strikes of the jackhammer began once more.
“It’s the ore,” Tenebrous said. “There’s too much resistance here.”
Plagueis knew what needed to be done. “I’ll go down,” he said, and was on the verge of leaping into the shaft when Tenebrous restrained him.
“This can wait. We’re returning to the grotto.”
Plagueis hesitated, then nodded. “As you say, Master.”
Tenebrous swung to the droid. “Continue your attempts to deactivate the unit.”
“I will, sir. To do that, however, I will need to remain here.”
“What of it?” Tenebrous said, cocking his head to one side.
“Should I fail in my efforts, the ensuing explosion will surely result in my destruction.”
Plagueis understood. “You’ve been useful, droid.”
“Thank you, sir.”
Tenebrous scowled. “You waste your breath.”
Nearly knocked over by the swiftness of Tenebrous’s departure, Plagueis had to call deeply on the Force merely to keep up. Retracing the inclined path they had taken from the grotto in which their starship waited, they fairly flew up the crystal-studded tunnel they had picked their way through earlier. Plagueis grasped that a powerful explosion was perhaps imminent, but was mystified by his Master’s almost mad dash for the surface. In the past Tenebrous had rarely evinced signs of discomfort, let alone fear; so what danger had he sensed that propelled him with such abandon? And when, in the past, had they fled danger of any sort? Safeguarded by the powers of the dark side, the Sith could hardly fear death when they were allied to it. Plagueis stretched out with his feelings in an attempt to identify the source of Tenebrous’s dread, but the Force was silent.
Ten meters ahead of him, the Bith had ducked under a scabrous outcropping. Haste, however, brought him upright too quickly and his left shoulder glanced off the rough rock, leaving a portion of his suit shredded.
“Master, allow me to lead,” Plagueis said when he reached Tenebrous. He was only slightly more agile than the Bith, but he had better night vision and a keener sense of direction, over and above what the Force imparted.
His pride wounded more than his shoulder, Tenebrous waved off the offer. “Be mindful of your place.” Regaining his balance and composure, he streaked off. But at a fork in the tunnel, he took the wrong turn.
“This way, Master,” Plagueis called from the other corridor, but he stopped to surrender the lead.
Closer to the surface the tunnels opened into caverns the size of cathedrals, smoothed and hollowed by rainwater that still surged in certain seasons of Bal’demnic’s long year. In pools of standing water darted various species of blind fish. Overhead, hawk-bats took panicked flight from their roosting places in the stippled ceiling. Natural light in the far distance prompted the two Sith to race for the grotto; but, even so, they were a moment late.
The gas explosion caught up with them just as they were entering the light-filled cavity at the top of the escarpment. From deep in the tunnel resounded a squealing electronic wail, and at the same time, almost as if the cave system were gasping for breath, a searing wind tore down from a perforation in the grotto’s arched ceiling through which the ship had entered. A muffled but ground-heaving detonation followed; then a roiling fireball that was the labyrinth’s scorching exhalation. Whirling to the tunnel they had just exited and managing somehow to remain on his feet, Tenebrous conjured a Force shield with his waving arms that met the fireball and contained it, thousands of flaming hawk-bats spiraling within the tumult like windblown embers.
A few meters away Plagueis, hurled face-first to the ground by the intensity of the vaporizing blast, lifted his head in time to see the underside of the domed ceiling begin to shed enormous slabs of rock. Directly below the plummeting slabs sat their starship.
“Master!” he said, scrambling to his feet with arms lifted in an attempt to hold the rocks in midair.
His own arms still raised in a Force-summoning posture, Tenebrous swung around to bolster Plagueis’s intent. Behind him, the fireball’s final flames surged from the mouth of the tunnel to lick his back and drive him deeper into the grotto.
The cave continued to spasm underfoot, sending shock waves through the crazed ceiling. Cracks spread like a web from the oculus, triggering collapses throughout the grotto. Plagueis heard a rending sound overhead and watched a fissure zigzag its way across the ceiling, sloughing layer after layer of stone as it followed the grotto’s curved wall.
Now, though, it was Tenebrous who was positioned beneath the fall.
And in that instant Plagueis perceived the danger Tenebrous had foreseen earlier: his death.
His death at Plagueis’s hands.
While Tenebrous was preoccupied holding aloft the slabs that threatened to crush the ship, Plagueis quickly reoriented himself, aiming his raised hands at the plummeting slabs above his Master and, with a downward motion of both arms, brought them down so quickly and with so much momentum that Tenebrous was buried almost before he understood what had hit him.
Stone dust eddying around him, Plagueis stood rooted in place as slabs interred the starship, as well. But he gave it no thought. His success in bringing the ceiling down on Tenebrous was proof enough that the Bith had grown sluggish and expendable. Otherwise, he would have divined the true source of the danger he had sensed, and Plagueis would be the one pressed to the floor of the grotto, head cracked open like an egg and chest cavity pierced by the pointed end of a fallen stalactite.
His race to Tenebrous’s side was informed as much by excitement as charade. “Master,” he said, genuflecting and removing his and Tenebrous’s respirators. His hands pawed at the stones, removing some of the crushing weight. But Tenebrous’s single lung was pierced, and blood gurgled in his throat. Ragged tears in the sleeves of the envirosuit revealed esoteric body markings and tattoos.
“Stop, apprentice,” Tenebrous strained to say. “You’re going to need all your strength.”
“I can bring help. There’s time—”
“I’m dying, Darth Plagueis. There’s time only for that.”
Plagueis held the Bith’s pained gaze. “I did all that I could, Master.”
Tenebrous interrupted him once more. “To be strong in the Force is one thing. But to believe oneself to be all-powerful is to invite catastrophe. Remember, that even in the ethereal realm we inhabit, the unforeseen can occur.” A stuttering cough silenced him for a moment. “Better this way, perhaps, than to perish at your hand.”
As Darth Bane would have wished, Plagueis thought. “Who supplied the mining probe, Master?”
“Subtext,” Tenebrous said in a weak voice. “Subtext Mining.”
Plagueis nodded. “I will avenge you.”
Tenebrous canted his huge head ever so slightly. “Will you?”
“Of course.”
If the Bith was convinced, he kept it to himself, and said instead: “You are fated to bring the Sith imperative to fruition, Plagueis. It falls to you to bring the Jedi Order to its knees and to save the rest of the galaxy’s sentients from themselves.”
“But I need to warn you …,” Tenebrous started to say and fell abruptly silent.
