Far from the reaches of the Federation, the Starship Enterprise™ has been guiding the development of a once obscure planet upon whose fate the future of the galaxy may now depend. The Enterprise has been the sole representative of the Federation, fighting a constant battle to protect the colonists from enemy aliens and standing alone against all those who have their own designs on the colony world.

CHALLENGER

But all adventure come to an end. It is time for Captain Kirk and the Enterprise to turn over the guardianship of the colony to another ship and crew. The new ship arrives in the midst of a deadly attack on the colony -- and is destroyed. With the Enterprise off fighting a new and powerful enemy that threatens the colony as well as its enemies, Commander Nick Keller, first officer and ranking survivor of the decimated crew, is marooned and at first alone -- but he must find a way to complete his original mission and come to the aid of the Enterprise in what might be its most desperate hour.

Chapter One

"How could threat vessels get so close without tripping our sensors?"

"What do you expect from me? Look at the monitors. Completely gamma-seized."

"Then we better saddle up and learn to ride blind."

The sci-deck of Starfleet Cruiser Peleliu stank and smoldered. Part of the carpet was on fire, but nobody was bothering with it. Hot damage crawled like parasites through the mechanics under the sensor boards' tripolymer skin. Burst connections caused tiny volcanoes of acid in ripped-open sheeting. A third of the pressure pads and readouts had quit working or were crying for damage control.

Nick Keller swiped his uniform's dirty sleeve across his forehead, bent over the sensor boards, and tried to focus his stinging eyes. A fleck of insulation hung from a wing of his briar-patch-brown hair and blocked part of his view. For an hour they'd fielded attacks from enemies they couldn't see, couldn't target, and hadn't expected. How had any hostiles known they were on their way out to Belle Terre? Or was this some new enemy that nobody in Starfleet or out at the colony even knew about yet?

The question went unanswered. Sensors couldn't see through the bath of gamma radiation spewed by a pulsing neutron star so far away that even working long-range sensors wouldn't have picked it up.

Beside him, Tim McAddis dribbled sweat from his pale forehead onto the sensor dials. His blond hair glistened with a frost of perspiration. "I'm used to seeing things a solar system away, not a lousy five hundred yards. Now that our deflectors are on full, we can't even pick up phantom data like before."

It was a hard thing for a science officer to admit.

Keller pressed a hand to McAddis's hunched shoulder. "Look at the bright side. You'll get the blame instead of me."

McAddis grinned nervously. "The mighty second mate stands defiant."

A knock on the cold-molded lattice grid near his knee got Keller's attention. He found the first officer's reassuring face peering up from the command deck seven feet below, through the lattice fence that prevented crewmen or tools from falling under the sci-deck rail. "What've you two got up there? How'd they come up on us?"

Without a good explanation, Keller knelt to meet him under the rail and handed over the unhelpful truth. "Derek, they must've cruised in cold. No engines. Coasting, like the old days of rocketry. We were looking for exhaust signatures, not solid objects. All I can figure is the bad guys are accustomed to blackout action and know how to maneuver on inertia. Without engines, they're really invisible."

"Mr. Hahn," the communications officer interrupted, "sickbay reports thirty casualties."

"How many dead?" Derek Hahn asked.

"They just said casualties. I don't think they want to tell us."

Kneeling up here in only a pretense of seclusion, Keller gripped the rail at the tremor in Tracy Chan's voice. Everybody was shaken badly. They weren't even sure yet how many of their shipmates were dead. Suj Sanjai at tactical had been killed in the first hit less than an hour ago. That grim hello had brought in critical seconds of attack before the Peleliu got its shields up. Since then, the minutes had been long and bitter, landing percussion after percussion on them from unseen foes who understood better than Starfleet how to fight during Gamma Night.

"Phasers direct aft," the captain ordered. "Fire!"

Both Keller and Hahn looked at the command deck.

Staccato phaser fire spewed from the aft array, at targets no one could see, jolting the ship much more than normal. That was the damage speaking. The cruiser convulsed under Keller's knee.

Keeping his voice low, he murmured, "What's he targeting? He can't possibly know where they are."

Hahn shook his head, but said nothing. He watched Captain Roger Lake, stalking the center deck.

From up here on the half-circle balcony, Keller clearly saw the command arena below except for the turbolift. The science and engineering balcony where he knelt rested on top of the lift's tube structure, a design meant to maximize use of the cruiser's support skeleton. Two narrow sets of ladder steps, one to his left and the other to his right, curved down to the command deck on either side of the lift doors. Below, Crewman Makarios at the helm and Ensign Hurley at nav both hunched over their controls, staring at the main viewscreen, which stubbornly showed them only a static field interrupted every twenty seconds or so by a grainy flash of open space, fed by McAddis's tedious attempts to clear the sensors. The largest screen on the bridge -- on any Starfleet bridge -- was their window to eternity. The two fellows at the helm were hoping for a lucky glimpse of the attackers, maybe get off a clean shot with full phasers.

To port of the helm the half-demolished tactical station was still unmanned, with Captain Lake's stocky form haunting it as he tried to keep one eye on the main screen. Why hadn't he called for somebody to replace Sanjai? Why was he so moody?

To starboard, Chan's communications console was the only board on the bridge that had so far evaded damage, either direct or repercussive. Everybody else was struggling just to make things work at half capacity. Those first hits had done some nasty work.

Up here the engineering console on the balcony's starboard side beeped madly, reporting dozens of damaged sites all over the ship, but there was no one to answer. The engineers had split for their own section as soon as the attack came, and behind him the environmental and life-support board went wanting too. Keller and McAddis were up here alone.

Almost alone.

The sci-deck offered a certain amount of privacy. Sound insulation and clever design of the ceiling shell prevented travel of much conversation from up here to the lower deck, where command conversations were also taking place. The two sections, then, could be functionally close, but not interrupt each other. Usually, Keller liked it up here. This was second-officer territory if ever there had been any. During this voyage, though, an added presence haunted the upper deck.

He glanced to his right.

There she was. That Rassua woman, Zoa, along for the haul. A cross between an ambassador and an inspector, she wasn't in Starfleet, but she was here most of the time anyway, fulfilling her mission of "determining whether the Federation is up the standards of the Rassua."

She stood on the upper deck as if someone had leaned an ancient Egyptian sarcophagus against the console, both legs braced, her gold face and thick hair in a waterfall of severe skinny plaits, her lined lips giving nothing away. In the months of travel, Keller had only heard her voice a couple of times. If she was any indication, the Rassua weren't talkative.

Dressed in woven strips of leather that left her heavily tattooed shoulders bare, Zoa was markedly disparate from the Starfleet crew in their black trousers and brick-red jackets. If only she had boots on. Instead, she wore only some kind of crisscross thong sandals with thick soles, allowing her two-inch toenails to curve down like a hawk's talons hooked over a branch.

And she never moved her face. Her blue-dot eyes followed the crew action here and below. It was like having a sphinx watch every move they made. Keller wished he could order her off the bridge. Roger Lake wanted her here. He liked showing off to an alien who was being courted by the Federation. The UFP wanted the Rassua alliance to guard their zenith borders.

So here she was, observing. If they got out of this, she'd have a real story for somebody back home.

Keller had hoped she'd get the hint and go below when the battle started, but apparently this was what she'd been waiting for all along and she wasn't about to leave. He tried to ignore her. His skull throbbed.

Derek Hahn reached u