Obi-Wan's comlink signaled, and he grabbed it. It was Tyro. The reception was poor, and the corn line crackled.
"Obi-Wan, I must meet with you. Where are you?"
"In the water tunnels. Tyro, I don't have time — "
"Listen to me. I've dug back, looking for links. And I stumbled on something. Something… much more… terrible."
Even through the poor connection, Obi-Wan heard the fear in Tyro's voice. "I know about the assassination plot on Palpatine," Obi-Wan told his friend.
"What? No…" The comlink crackled again."… can't talk about it over a comlink. We must meet. This involves the highest level… great evil…"
"I know, Tyro!" Obi-Wan hissed into the comlink, exasperated. "Sano Sauro!"
". only you can truly understand…" Tyro said through the static.
"Tyro? I can't pick up what you're saying! I'll get back to you as soon as I can." Obi-Wan shut off the transmission. He saw a schematic blueprint on the side of the tunnel, and he hurried over to examine it.
The blueprint was fashioned by raised laser lines that responded to touch. When Obi-Wan touched one part of the blueprint, it lit up in far more detail.
Just like the blueprint at the factory on Falleen.
They had used the same system to map the tunnels. Did that mean that the tunnels in the factory on Falleen corresponded to the Senate tunnels?
Obi-Wan touched the area he was standing in. The tunnel design appeared, with all the different branches.
He didn't recognize the design. It was different from the one on Falleen. But that didn't mean that another quadrant wouldn't match. If he found the quadrant that they'd built on Falleen, he'd know which way Zan Arbor and Omega were going.
Which meant he would have to flash through each quadrant of the Senate water system until he found the one that matched. Obi-Wan scanned the menu.
There were five hundred and seventy-two separately designated quadrants to the system. It would take too long for him to stand here and try to match them.
Obi-Wan studied the tunnel around him in frustration. The answer was here. Somewhere. There was something he wasn't seeing.
He closed his eyes, remembering the tunnel on Falleen. Had there been a clue there that he had missed?
In his mind, he saw the tunnel he was standing in and matched it to the one on Falleen. Something was different, he knew. What? Suddenly, he realized something crucial.
Vents.
The Senate water tunnel had no vents. Of course not. It had valves to regulate water flow.
The tunnel on Falleen had vents.
Obi-Wan bent forward and accessed the grid again. He saw on the menu that the air and water tunnels were stacked on top of one another. There were several linking passageways for workers to get from one to the other.
He pressed the key for the air tunnel quadrant nearest to where he was standing.
It was the same grid.
Obi-Wan realized then what he should have realized on Falleen. Zan Arbor had attempted to transmit the Zone through water to a large population. She had failed.
TRACK A EXPERIMENT VOIDED.
TRACK B EXPERIMENT BEGUN.
Track A had been transmission through water. It had failed. Four deaths were the result.
Track B had been transmission through air. Obi-Wan's conclusions thudded through his brain with sickening logic.
Zan Arbor and Omega knew he was expecting them to attack through water.
They had wanted the Senate water tunnels to be shut down.
It was their way in. And while the water tunnels were being searched, they would release the Zone into the air.
He studied the blueprint again, then whipped out his comlink as he ran. He could not get through. He was too deep in the system now.
He ran along the tunnel until he saw the light indicating a pass- through to the air tunnels. He accessed the door and rushed through, then jumped on a constantly moving platform that took him up to the air transport systems. Obi-Wan raced through a circular door into the air tunnel.
He remembered the blueprint perfectly. If he took a left turn, then a right, he would arrive in the main air tunnel. The one that went to the main Senate chamber.
He ran down the tunnel, his footsteps making no noise. Before long he heard a faint humming noise.
A speeder bike.
He took the next turn and saw them. Zan Arbor and Omega, traveling at low speed through the tunnel.
He accessed the Force and leaped, throwing himself through the air, straight at the speeder.
Chapter Nineteen
Obi-Wan hit the end of the vehicle and grabbed on to the edge of the backseat. The speeder lurched with the impact and collided with the wall in a shower of sparks.
In the pilot seat, Granta Omega took a backward glance and saw him. A look of rage transfixed his features into a snarling mask.
"Grants, watch out!" Zan Arbor screamed.
The tunnel curved and now the speeder was heading straight for the wall. Omega jerked the controls. The rear fishtailed wildly, tossing Obi- Wan back and forth. He scrambled toward the third seat in the rear.
Zan Arbor took out a blaster. Obi-Wan activated his lightsaber while she lifted it to aim. He swung, deflecting fire, but it was hard to hold on with one hand and he knew he wouldn't be able to do it for long.
"Faster!" she shouted to Omega. With the other hand, she took another blaster out of her belt. "Just drive!"
To his surprise, she did not aim the second blaster at him. Omega piloted the speeder bike closer to the walls of the tunnel, and she took aim at the side.
At the vent.
Obi-Wan realized she wasn't holding an ordinary blaster. It was likely packed with pellets. She was going to shoot into the vent. And right about now, if he remembered the blueprints correctly, they were on a direct line to the main Senate chamber.
"Get closer!" Zan Arbor screamed. She half-stood, half-crouched on the seat, lining up her shot, ignoring Obi-Wan for now. She would only get one chance at the vent.
But Obi-Wan was well aware that Omega had two problems: He had to get close enough for Zan Arbor to shoot, but he had to keep Obi-Wan off balance enough to prevent him from reaching Zan Arbor.
The Force hummed in the tunnel and around him. Time slowed down. Only a second remained until Zan Arbor would take her shot, but that second broke down into smaller pieces of time that Obi-Wan could use.
He could see the vent approaching. He waited until he knew Omega would have to get the speeder closer to the wall. At the moment Omega made the adjustment, Obi-Wan threw himself forward, knocking Zan Arbor off position.