The cop stood, grunting in discomfort but still able to walk. The other Interpol officer tried to get up, only to drop painfully back into his seat. ‘Okay,’ Eddie told the cop, ‘come with me.’

‘I’m coming too,’ said Nina.

‘No,’ he said firmly, indicating Probst. ‘Do what you can with his foot. We’ll take these bastards out before they get to you.’ He put a hand on the cop’s arm. ‘You ready?’

The Greenlander was only young, in his twenties, and his fear was clear. ‘I - I’m okay,’ he said.

‘You’ll be fine,’ Eddie reassured him. He pointed to the wreckage of the tail. ‘We get to the gun locker and kill any fucker who comes down that hill. Sound good?’ The cop nodded. ‘Okay, let’s go.’

He jumped out of the fuselage. The surface snow was surprisingly hard-packed, his feet only sinking a few inches before ice crunched beneath them. He started to run up the slope beside the ragged, debris-strewn gouge, kicking up a crystalline spray with each step. The cop followed.

The snowmobiles were speeding towards the crash site, roostertails of snow swirling in their wakes. Eddie pushed harder, skirting the severed wing. The stink of fuel filled his nostrils, as he passed it. More debris lay in his path, as did a dark splash of blood across the whiteness. He kept running. The tail section loomed ahead—

One of the snowmobiles veered towards the two men. The aurora’s light had betrayed them.

Eddie cursed and leapt into the channel, hunching down as he scrambled over the churned ice. He looked back at the cop - who froze as the headlight pinned him. ‘Get down!’ he shouted. The cop broke from his paralysis and jumped after him—

Gunfire spat from the snowmobile, bullets ripping into the young man’s head and chest. Blood splattered across the ice as he crumpled.

Anger surging, Eddie ran on, head down. Ice sprayed over him as more gunshots smacked into the snow.

The half-buried tail section was not far ahead. Its interior was dark, a black mouth surrounded by jagged metal teeth. He vaulted a large hatch lying on the ground and sprinted into the shadows. The open end of the fuselage was packed with snow, seats jutting through the mound - but beyond it the central aisle was more or less clear, the gun locker at its end.

He scrambled over the drift. No emergency lights here, but there was enough illumination from the aurora for him to find the locker. He grabbed the handle—

It turned - but the door only opened an inch before banging against something. He pulled harder. It flexed, but still refused to open. ‘Shit!’ He groped in the darkness . . . and found that the floor had buckled upwards in front of the locker.

He kicked at it, trying to bend it back down, but it was too solid. A harsh light shone through the portholes - the snowmobile was almost on him. The other vehicle roared on down the slope towards the plane’s front section. Two men on each machine.

The passenger on the one approaching leaned out from behind the driver, gun raised—

Eddie dropped flat as bullets riddled the wreck. A shot clanked off the seat frame just above him. Spears of light stabbed across the cabin through each new hole in the fuselage.

If he stayed put, he was a dead man - he would be pinned inside the hull. He slithered on his belly over the piled snow as more shots punctured the plane’s skin. Emerging into the faint auroral glow, he pulled himself round the torn edge of the fuselage to take shelter behind it.

The snowmobile’s snarl dropped to an idling stutter. The gunfire also stopped. Eddie risked a peek at his attackers. If the gunner were reloading, that would give him a few seconds to take action . . .

He wasn’t reloading. He was pulling the pin from a grenade.

Eddie sprang up and ran for the rear of the wreckage as something small but heavy clanged off metal behind him—

One of the snowmobiles was still barrelling straight for her. The other had stopped further uphill; a man hopped off, the driver revving up and turning to ride after his comrades.

No sign of Eddie. Had he been inside the tail?

She didn’t have time to consider the horrible thought. A man on the nearer snowmobile opened fire. ‘Jesus!’ she gasped, ducking. Bullets kicked up snow and peppered the fuselage

The other Interpol agent yelled in fright as a round struck the forward bulkhead. He lurched upright, clambering into the open and starting to run across the ice.

‘No, wait!’ Nina shouted, but it was too late. The gunman had spotted the fleeing figure, and shouted for the driver to angle after him. Flame flashed from his gun’s muzzle as he opened fire on full auto—

The running man tumbled bloodily into the snow.

The snowmobile swerved back towards the plane, driving alongside the trench. Nina crouched beside Probst, desperately searching for an escape route, any form of defence. But the wrecked fuselage offered no protection and no hiding places, and they had no weapons—

Yes, they did. She pawed through the survival kit. The orange-painted Very pistol might not have been designed as a weapon, but it was still a gun. She opened the breech and inserted a flare, then snapped it closed.

‘You’ll never hit them with that,’ Probst warned her weakly.

‘I’m not aiming at them,’ Nina replied, jaw set. She raised her head, judging the distance to her target. Waiting for the right moment.

The gunner fired again. Shots cracked against the seats. Nina flinched, but held her position.

Waiting . . .

She pulled the trigger.

With a thump, the flare sizzled away on a trail of red-lit smoke towards her target - not the snowmobile, but the severed wing, and the ruptured auxiliary fuel tank inside it . . .

And fell short.

She had overestimated the projectile’s power, not aiming high enough. The flare landed, sending up a plume of steam as the intense heat melted the snow. Nina ducked, fumbling for a second flare, but she knew that by the time she reloaded, the snowmobile would be past the wing.

She had missed her one chance.

The gunman had quickly realised that his grenade had not caught anyone inside the fuselage. Now, he was circling the tail section, MP5K at the ready. There were no tracks in the surrounding snow, so his quarry was close by . . .

Eddie heard the crunch of his footsteps as he approached the stern. He was crouched on the other side of the high tail, unable to move - any sound would reveal his position. And at such close range, a burst from the Heckler and Koch would go straight through the plane’s aluminium skin. The other man didn’t even need to see him to kill him.

His only chance was a surprise attack as the gunman rounded the tail. But he could tell his hunter was cautious, unlikely to fall for such an obvious ploy. The icy crackles came closer, pausing. Listening.

Eddie tensed, ready to spring - but he knew that without a diversion, he had no chance of reaching his enemy before being shot . . .

A new light, brighter than the aurora. Startled, she looked between the seats - and saw flames spreading outwards from the sputtering flare.

The fuel!

It had trickled downhill - and now the fire was rushing back up the line of flammable liquid to its source—

The wing exploded, metal shards scything in all directions. The blast tore apart the engine, sending one of the propeller blades spinning away - to slam into the snowmobile. The driver’s upper body was reduced to a red pulp by the heavy piece of metal, his hands and the stumps of his forearms left clinging to the handlebars. The vehicle swerved out of control and crashed into the trench, flinging the other man into a pool of burning avgas.

His diversion—

He threw himself bodily at the rudder, slamming it into the gunman on the other side. Swinging round the tailplane, he launched himself at the staggering figure and tackled him at chest height. The gun went off - but the bullets went wide. He pressed home the attack, driving a powerful blow into the man’s stomach.

The gunman crashed against the battered fuselage. Eddie grabbed for the MP5K, but only managed to get a hold on the other man’s wrist.

His adversary smashed his free hand down on the Englishman’s head. Another harsh blow to the base of his neck dropped him to one knee. Eddie was still gripping his attacker’s right wrist, but could feel him twisting the gun round at him—

He punched the gunman’s stomach again. From his awkward position it didn’t cause any real damage, provoking only a gasp and a flinch - but that was all he needed.

His hand slid up from the man’s wrist to the MP5K’s butt, finding his opponent’s forefinger . . . and squeezing as he yanked the weapon downwards.

The gun blazed on full auto. Its remaining bullets slammed into the ground between the two men, fire meeting ice - and lead meeting leather as the last bullet tore through the gunman’s boot and blasted off his big toe. He screamed, hopping as blood spurted from the neat nine millimetre hole.

Eddie wrested away the empty gun - and viciously smashed it into the wounded man’s face. Nose crushed, the gunman fell on his back. Eddie dived on him, pushing the gun down hard against his neck. The man struggled, spitting blood and thrashing at Eddie’s face . . . then there was a wet crunch deep inside his throat. With a final gurgling breath, he fell still.

The force of the explosion had knocked Nina to the floor. Wincing at the unexpected wave of heat, she staggered upright. A swathe of the ice channel was now a lake of fire; the Twin Otter’s main fuel tanks were in its belly, and had ripped open when the fuselage broke in half, spewing out the volatile liquid. ‘Guess we don’t have to worry about freezing to death,’ she told Probst - before realising the danger was not over.

The second snowmobile was still coming. And she had dropped the flare gun when she fell.

Defenceless.

The rider was well out of the sub-machine gun’s effective range. He had to get down the hill fast to save Nina - but how?

The auroral glow shimmered over an intact piece of the plane on the ground. That was one way . . .

The snowmobile skidded to a stop. Nina cautiously looked round the doorway, seeing a shadowy figure climb off the idling machine. He had a gun in his right hand . . . then switched it to his left to take something from a pocket.

A grenade.

‘Oh, shit,’ Nina whispered. She backed into the cockpit, but there was no solid door that could be closed, just a flimsy sliding partition. No protection. She could flee through the broken window, but that would mean abandoning Probst to his death - and even if she did, there was nowhere to run, nothing but bleak ice for a hundred miles in every direction.

The man hooked a finger round the pin, pulled it out—

And whirled at a noise from behind.

Eddie hurtled down the slope, riding the de Havilland’s cabin hatch like a sledge and howling like a banshee. The startled man fumbled with his gun and the grenade, trying to switch the two weapons between his hands without releasing the latter’s springloaded spoon and arming the fuse. He brought up his MP5K—

So did Eddie. The compact weapon spat flame. Bullets twanged off the wreckage behind his target, but one shot hit, a puff of blood bursting from the man’s thigh. He screamed, instinctively dropping what he was holding to clap both hands to the wound as he fell . . .

On his own grenade.

Eddie dived off the hatch, covering his head with his arms. ‘Grenade!’ he yelled—

The explosion this time was considerably more muffled. Pieces of the luckless gunman splattered down around the steaming crater in the ice.

Eddie stood and circled the starburst of red to the broken fuselage. ‘Nina! You all right?’ She appeared in the doorway, face alight with relief, and embraced him. He kissed her, then saw Probst in the cockpit. ‘Are you okay?’ The German nodded. ‘What about the other guy?’

‘He’s dead,’ Probst said flatly.

‘Dammit . . .’ He noticed that some of the lights on the instrument panel were still active - including the radio. ‘Is that jammer still running?’

Probst listened to the electronic warbling. ‘Yes. This radio won’t have enough power to break through it, not on the emergency battery.’

‘Then we’ll have to shut it off.’ He regarded the glow on the horizon, then his gaze moved to the puttering snowmobile. ‘Think I’ll meet our new neighbours,’ he said, checking his gun’s remaining ammo.

‘I’m coming with you,’ Nina said.

‘No, you stay here with him.’

‘Eddie, I am coming with you,’ she said defiantly, taking more items from the survival kit - a pair of foil blankets, a small roll of duct tape and a compact oil heater. She started to tape one of the blankets over the broken cockpit window. ‘I think there’ll be more people than just Pramesh and Vanita in that place. You’ll need all the backup you can get.’ The makeshift windbreak in place, she helped Probst into the pilot’s seat and draped the other blanket over him, then propped the heater on the control yoke. ‘Walther, as soon as we take out the jammer, you send an SOS.’

‘How much time will you need?’ he asked. A glass tube set in the little heater’s side revealed the oil level; considering the small size of the tank, it was unlikely to last long.

‘If we haven’t done it in an hour, we probably won’t be doing it at all.’ Pulling the partition across the doorway as she exited, she faced Eddie. ‘Okay, let’s go.’

‘Seriously. You’re not coming,’ he said as she pushed past him and headed for the snowmobile.

‘Oh, I seriously am.’

‘You don’t have a gun.’

Nina picked up the exploded snowmobiler’s MP5K. ‘I do now.’ She trudged through the snow to the waiting vehicle and straddled it. ‘Whose turn is it to drive?’