I looked along the opposite bank, following the river's current, trying to work out where we might land up. I could see downstream for about 250 meters, then the river bent around to the right and disappeared from view. The opposite bank was about two or three feet above water level, with plenty of grab provided by foliage and tree roots exposed by the current as it carved into the soil. I had to a.s.sume the worst, that there was a ma.s.sive waterfall just after the bend, and that meant that we had just 250 meters in which to make our way across and get out.

The ambient temperature wasn't freezing but it was bitterly cold. On land, we wouldn't die of exposure if we kept moving, but the river would be another matter. Sarah saw me looking at the water and back at her. She dropped her head and buried it in her arms. The gesture was one of resignation, and recognition of the fact that, if she were telling the truth about wanting to get away, I was her only means of escape.

The heli was somewhere behind us, doing its stuff between the river and the houses; I couldn't tell exactly where it was, but it had to be near or I wouldn't be able to hear the rotor blades groaning as it tried to keep a low hover.

I went over to her, grabbed hold of the belt and pulled her to her feet.

She looked into my eyes.

"Nick, why not take this thing off? Please. I'm not going anywhere, am I?"

I ignored her. Gripping the belt with my left hand, I moved down to the water's edge, keeping my eyes lifted to the sky. I tried to convince myself that the only thing that mattered right now was the helicopter.

A spit of rocks extending about five meters out looked as if it would give us some sort of platform to begin our crossing; water sluiced over the top and there was no way of telling how deep it was on either side. I hoped Sarah could swim, but if she couldn't, tough, she should have said. I looked at her eyes and suddenly saw fear there, then I looked at the river again. It was a fair one. There was no way I couldn't remove the belt. I needed to keep her alive. Her death had to be at a time and place of my choosing.

As I undid the knot she said very quietly, "Thank you."

I caught her eye, trying to read the message there, then nodded and moved on, throwing the belt into the bag. She stepped gingerly over the small stones at the water's edge.

"Come on!" I snapped.

She kept her head down, watching her footing.

"I'm trying, it's hurting my feet." As we started to wade in she gasped, "Oh, f.u.c.k, it's so cold!"

She was right; the water temperature had to be near freezing. I told myself just to get in there, get it done, and worry about warming up again on the other side.

I fought the current until I was up to my waist, with Sarah behind me grasping the strap of her bag that was still over my shoulder. Then, with my next step, I was into fast-flowing water, the current tearing at my leg, threatening to throw me off balance. I grabbed her hand, whether to support myself or to help her, I didn't know, but no sooner had I lifted my other leg than the weight of water whipped it away from under me and I was being swept downstream. I still clung to Sarah, both of us kicking and thrashing to keep afloat and make some progress toward the opposite bank, but the current was starting to drag me under. If you're trapped against a rock by water that's just half a meter high and moving at 12 mph, you'd need to be able to bench press 550 pounds to lift yourself away. We were no contest for the tons of water surging downstream.

My head was forced under and I swallowed a mouthful of freezing river. I kicked back to the surface, forcing myself to breathe in through my nose, only to choke as I inhaled yet more water. I let go of her. We each had to fight our own battle now. She looked at me, her eyes the size of saucers as she realized what I'd done. That wasn't my problem; it would become one only if I couldn't find her body before they did. She still had to disappear without trace.

I saw her through wet, blurred vision, trying to keep her head up, kicking and swimming and wading like a seal. Then she was sucked under by the current and I couldn't tell how far across I was. The water kept taking me under, and I was more concerned about sucking in air than getting to the other side. I couldn't see Sarah at all now, but there was nothing I could do about that. I was in enough s.h.i.t of my own.

As I came up again and s.n.a.t.c.hed a lungful of air, I heard a scream.

"Oh, G.o.d! Oh, G.o.d!" I looked around for her, but saw nothing above the torrent.

I was dragged back down and inhaled more river water. Scrabbling my way to the surface, I saw that this time I was almost at the far side. The current wasn't dying down, though, because the river curved around to the right and I was on the outside of the bend, where the force of the water was at its fiercest. An eddy caught me and the momentum threw me against the bank. I threw out my hands, trying to grasp an exposed tree root or an overhanging branch, anything I could.

I shouted for Sarah, but all I got in reply was another mouthful of river.

I coughed, trying to force my eyes open again, but they stung too much.

Thrashing around blindly, my left hand connected with something solid. I I made a grab, but whatever it was gave way. The next thing I knew, my right arm had booked into a large tree root. The current swung me around and pressed me against the bank, and my feet connected with solid ground. I clung to the roots and took deep breaths to slow myself down.

Downstream, nothing was moving in the water but branches and lumps of wood.

I struggled against the weight of water until I could reach with my free hand and grab another root higher up the bank. I finally hauled myself up until only my feet were left in the water, being forced sideways by the current.

One more grab and pull and I was lying on the bank, fighting for breath. I'd never felt such relief. I lay there for more than a minute, coughing up water and slowly feeling some strength return to my limbs.

As my head cleared, I realized my problems weren't over. I'd now have to find Sarah, and she could be anywhere downstream. Clearing the banks would expose me to view from the ground, and the river was a natural route for any follow up to be taking. As if that wasn't bad enough, the heli, if it came back, would ping me at once.

There was nothing I could do about any of that; I just had to get on with it and retrieve what I could from this gang f.u.c.k. Turning my head, I could make out the river behind me, blurred by the water in my eyes. There was still no sign of Sarah.

My soaking clothes weighed me down as I started to stumble along the bank, leaning over the edge from time to time to double check that she wasn't concealed behind rocks or in some kink in the ground below me.

If I couldn't find her and she was discovered downstream, or even on the coast, I'd just have to accept that it was a big time f.u.c.kup. However, not yet.

As I moved, I kept my eyes skinned for somewhere to hide her body if she were dead. Hiding her wouldn't be the ideal solution, but there was f.u.c.k-all else I could do. It would slow me down, carrying her out of the area, and I could always come back in a month or two and finish the job. It needed to be a spot that I could ID at a later date, perhaps after a change of season, and one that wasn't near a hikers' route or a water course.

As the current reached the bend and changed direction, its noise became almost deafening. I followed around, the dead ground gradually coming into view. I couldn't believe it. Just 300 meters farther downstream, resting on timber supports driven into the riverbed, was a small footbridge. The story of my life. If I'd been looking for one, it wouldn't have existed.

I stopped, looked and listened. The bridge would be on their maps, and anyone sent to follow us would use it to cross.

As I got to within maybe 150 meters of the structure, I could see that it was made of three thick wooden supports rising up from the river on each side. The walkway, made of what were probably old railway sleepers, was maybe two meters above that.

In any search pattern the police would use this bridge as a key point, somewhere that it would be natural to go to. Maybe they had already identified it and had a team hidden, waiting for us to cross.

Should I move into the canopy a bit and then come back to the river farther down once I'd boxed around it? No good: I needed to search the whole bank. The way things were going she was probably just a meter from the bridge, dead. I watched for a while longer. The wind bent the treetops and the water crashed along at warp speed.

At first I thought it was the white water pushing itself against the middle support, with the occasional plume of foam being thrown into the air.

It wasn't. It was Sarah, clinging to the post and reaching up, trying to make the two meters to safety. Time and again her hand moved up the support, only to be ripped away again as the current got hold of her. For a split second I hoped she'd be washed away; then I could concentrate on saving my own a.s.s and getting away, taking any flak when I got back to the U.K. Then reality kicked in. There was still a chance I could pull her out and do my job properly.

I moved back into the canopy and made my approach toward the bridge, lying down about twenty meters short for one last look. She wasn't making a sound. Either she was switched on enough to know not to scream, or she was just too scared. I didn't care which, as long as she stayed quiet.

There didn't seem to be any other activity, but then again, if the police were switched on I'd be very lucky to ping them. It was decision time: I could either get her out and complete the task, or let her get carried away and drown. Then it hit me that there was a third option. She could be swept away and survive.

I looked around for a branch that was long enough to do the job. It

didn't have to be strong, just long. Jumping up, I grasped one with both hands and pulled down with all my weight. Water sluiced onto me from the leaves. The branch snapped. I twisted and pulled, and it finally parted from the tree. I didn't bother stripping it of its smaller branches, just headed down toward the bank.

I stopped to pull off first my boots, then my jeans. For a moment I fantasized that maybe I could be doing the world a great service here. Maybe London knew that she was going to be the next Hitler. Then my jacket came off and the wind bit into me. What the f.u.c.k was I doing, freezing cold in the back of beyond, with the police after me, taking my kit off to save a woman's life just so I could kill her somewhere else? I gave myself another reality check.

"Shut the f.u.c.k up. Stone. It's pointless honking, you know it has to be done."

I secured my weapon and the contents of my jeans in the bag and put it back over my shoulder. With my boots back on, but my jeans and jacket in my hands, I left the canopy and ran out toward the bridge. I must have looked like someone doing a runner after being caught in bed with another man's wife.

As I hit the railway sleepers that made up the walkway, I could see her still playing the limpet, the current pushing her head against the support as she fought to keep it out of the river.

She saw me.

"Nick, Nick. I'm here ... here!"

As if I didn't know. I leaned over the handrail.

"Shut up!" I had to holler above the noise of the water as I started to pa.s.s down the end of one jeans leg, knotted to help her grip. The other was tied to one of the sleeves of my jacket. I could never remember the name of the knot. If I'd wanted to know it I would have joined the Navy. The other sleeve also had a knot at the end, to help me.

"Take the jeans end only," I shouted.

"Now listen to me, OK?"

She looked up, shaking the water from her face. Her eyes kept flicking toward the knotted jeans leg that was her lifeline. They were wide with fear.

I kept hold of the knotted sleeve as I dangled the material so that it would be easy for her to get hold of, yet still keep in contact with the support.

Her teeth made contact with the material first and she bit down, turning her head to bring it closer to her hands. Once there I could see by the determination in her expression that she wasn't going to let go.

"Sarah, look at me." I wanted her to understand exactly what was expected other. When people flap they nod and agree to everything without really understanding what's being said.

"I'm going to drop the rest of this lot into the water, and retrieve it on the other side of the bridge. When I shout, I want you to let go of the support and just hold on to the jeans.

Got it?"

"Yes, yes. Hurry."

"Here goes." I checked again to see if anyone was watching, then I threw the rest of the makeshift rope under the bridge.

I switched to the other side, lying on my stomach on the sleepers and leaning down. My jacket was snaking from side to side in the current.

Looking back upstream under the bridge, I could see her coughing and spitting out water, only to take another mouthful.

Moving the branch down into the water, I made contact on the third attempt and pulled up the free end of the rope. Wrapping the knotted end around my wrist, I braced myself against the wood supporting the handrail, ready to take the strain. I could no longer see her.

"Now, Sarah. Now!"

She must have let go and the current swept her under the span. There was an almighty jolt, then what felt like the world's biggest dog pulling on its lead. I held on to the jacket sleeve like a man possessed.

"Kick, Sarah. Kick."

She didn't need telling twice. The combination of her efforts and the pendulum effect of the current swept her in toward the bank like a hooked fish.

I got to my feet and managed to reel in two more twists of the jacket, taking a few steps toward the end of the bridge. By the time I reached the bank I had hands full of jeans. I dropped to the ground above her and we linked arms. She didn't need to be told what to do next. I heaved and rolled and she used my body as a climbing frame. A moment later and she was lying beside me on solid ground.

I thanked whichever guardian angel was looking over me that day.

She was coughing and fighting for breath. She wasn't going to be in any condition to help herself for a little while, and we had to get away from here. I hauled myself to my feet, bent down and scooped her up in a fireman's lift over my shoulder. I picked up the knotted jeans and jacket as I moved off, staggering more than running into the trees. I needed us to be out of sight of the helicopter, and to find some shelter.

Ahead of me was a steep rise. I put her down while I got some breath back. I was shivering violently, and Sarah moaned as she, too, fought the cold and shock. I wanted to get beyond the rise into another lot of dead ground, so we couldn't be seen from the other side of the river.

Her head lolled over my shoulder, her face close to mine. I was looking straight ahead and focusing on the trees, but I still heard the words.

"Thank you. Nick." I tilted my head toward her and did my best to shrug.

It felt strange to be thanked like this, and for the second time.

Safely inside the tree line, I stopped and helped her to the ground. I turned away and leaned against a tree, my lungs greedily sucking in air.

"Can you manage on your own?" I asked.

To my surprise, the reply came from very close. I felt her hand on my shoulder as she said, "I can do it. Let's go."

I moved off with her following, over the rise and onto dead ground. We couldn't be seen from the opposite bank anymore, but we still needed cover from the air and the biting wind. It wasn't as strong as last night, but wind chill could really slow us down after what we'd just been through.

Normally, when looking for shelter from the elements, the last place you want to be is in a valley bottom or a deep hollow, because hot air rises, but we needed the cover. We also needed to try and find a place where we could preserve what little body warmth we had left, and away from the noise of the river so I could listen out for pursuers.

As I bustled her through the canopy, needles pushed themselves sharply into my face, and bucketfuls of water spilled off the disturbed branches.

The best hide I could find was a ma.s.sive fir about 100 meters from the river, whose branches hung down to the ground. Sarah was clearly in pain as she crawled toward the base of the trunk. The branches started about a meter up the trunk and met the ground about a meter away from us. There was no noise here, except for the wind against the outer branches. It was just as wet inside as out, but it felt wonderful just to be under cover. It's a psychological thing; get up against, or under, something and you begin to imagine you're a bit warmer.

We huddled against the trunk, both of us shivering and shuddering.

Adrenaline had kicked in when we were on the move, but its effects were subsiding. I just wanted to lie there, but I knew that if I made an effort it would pay off. I pulled the strap of Sarah's bag over my head and dropped it on the ground. Then I took out the knots with cold, numb and very fumbling hands and teeth. With my foot on the collar of the jacket, I got hold of the rest of it and started to twist out the worst of the water.

Sarah looked at me like an abused puppy, huddled up and shivering. I untwisted the jacket and threw it at her. I wanted her to stay alive for two reasons now: I still didn't want to have to carry a dead weight out of the area, and I wanted her to answer some questions.

She put the jacket around her shoulders and hungrily wrapped herself up in it. Then she wriggled backward until she was resting against the tree, cuddling herself, trying to tuck the jacket around her legs.

I took off my shirt and T-shirt, and wrung them out, too. I was shivering so badly that it felt as if my muscles were in spasm, but it had to be done.

I had to get the water out and some air into the fibers so that my body heat what was left of it could sustain itself. Not that cotton has that many air pockets.

"Cotton kills," the saying goes in outdoors circles, and for good reason, but what I was doing was better than nothing. It made me think of Shirts KF, the thick woolly shirts we had to wear in the infantry.

I'd never found out what the letters KF stood for; all I knew was that the material used to itch and scratch, and in summer made you feel as if you were wearing a greatcoat, but in the field during winter they were great wet or dry, the fibers retained heat.

I put the shirt and T-shirt back on, then knelt to take off my boots, fumbling to undo the laces with numb, trembling fingers. Finally I wrung out my jeans, taking care to keep the pistol away from Sarah's grasp.

When I was dressed again I tucked everything in, trying to minimize the number of ways in which the wind could get to me. I pushed the pistol into the back of my jeans by the base of my spine, where she wouldn't be able to get at it.

I sat back against the trunk, with Sarah on my left. She was still in the same position as before, sitting in a curled up ball and using the jacket as best she could to keep herself warm, her hands keeping the collar pulled up around her face.

It's always best to share body warmth, and two people of opposite s.e.xes huddled together generate five percent more warmth than two of the same s.e.x. I nudged her with my elbow, held out my arms and motioned with my head for her to move over. She shuffled across, sniffing, her hair soaking wet and plastered over her face.

High above, a strong gust of wind made the tree sway. I straightened my legs and she arranged herself in my lap with her left side against me, then I lifted my legs to press her closer to my chest, which insulated her from the ground, and got more of her skin in contact with mine. Her wet hair was over my shoulder as her body pushed into mine. I put my arms around her. Neither of us could control our shivering. She snuggled into me, her head against my chest, and I could feel the benefit almost immediately.

There was a silence during which we both willed ourselves to get warm. I looked down on her wet, muddy hair, flecked with pine needles and bits of bark.

It almost took me by surprise when she spoke.

"I suppose they told you I'm a runner?" Her body was shaking. She didn't move her head for me to see, but I could tell by her tone that her period of compliance was coming to an end.

"Something like that." I bent my head to listen for any follow up, and raised my knees more to pull her nearer for warmth.

"And I suppose you believed them? Christ, I've been putting this operation together for over four years, Nick. Now it's destroyed by some dunderhead who's sent to f.u.c.k me over."

The dunderhead bit p.i.s.sed me off.

"Four years to do what? What operation?