The Chemistry of Death (35 page)

The same substance I'd found in the knife cut in Sally Palmer's vertebra.

I tried to calm down, to think this through. It seemed inconceivable that Tom Mason was the killer. He seemed too placid, too uncomplicated to be capable of planning the atrocities, let alone carry them out.

But we'd known all along that the killer had been hiding in plain sight. Mason had done that all right, patiently working in the churchyard or on the village green, blending into the background so effectively that no-one ever really noticed him. Always in his grandfather's shadow, a softly spoken man who never made an impression.

Except he'd made one now.

I told myself I was jumping to conclusions. Until a few minutes ago I'd been convinced Carl Brenner was the killer. But Mason fitted the profile just as well. And Brenner didn't keep the decomposing body of his grandfather in the house. Or try to mask the smell with the same material that had been embedded in a dead woman's neck.

My hands were shaking as I took my phone out to call Mackenzie, forgetting that there was no reception. I swore and hurried downstairs. But as much as he needed to know what I'd found, I couldn't leave until I'd made sure Jenny wasn't here. I tore through the darkened house, opening every door to check inside. None of them held any sign of life, nor even a telephone I could use.

I ran out to the Land Rover, trying my mobile again in case some atmospheric fluke allowed a signal. It was still dead. A gust of thunder boomed overhead as I started the car. It was fully dark now, and raindrops were starting to burst on my windscreen. The yard wasn't big enough to turn the car round so I began to back up. As I did the headlights swept across the trees opposite, and for an instant there was a small, answering flash.

If the car hadn't been an automatic I would have stalled it as I stamped on the brake. I stared into the woods where the flash had appeared. But whatever had been caught in the headlights was invisible now. Mouth dry, I slowly edged forwards, turning the wheel back towards it. As the beam swung over the trees, something deep within them gleamed again.

It was the luminous yellow rectangle of a car registration plate.

I saw now that the track I'd driven up didn't stop at the yard but continued on into the woods. Although it was heavily overgrown it still looked used. But whatever was parked up it was too far away to see. If not for that momentary reflection I would never have known anything was there.

I needed to contact Mackenzie, but the track beckoned me. This was private land, several miles from where either of the bodies had been found. It wouldn't have been searched. And there had to be a reason for a car to be there. I hesitated, torn between two impossible choices. Then I rammed the Land Rover into drive and set off up the track.

Almost immediately I was forced to slow down as the branches closed in. I switched off my headlights, not wanting to broadcast my approach any more than I already had, but without them it was impossible to see. When I turned them back on the track seemed to disappear beyond their beam. The rain was drumming down now. I flicked on the wipers and peered through the smeared glass as the car bounced along the uneven track. My headlights again picked out the bright smudge of the registration plate, a beacon of brightness in the gloom. Then I could make out the vehicle itself. Not a car, but a van.

It was parked next to a low, tree-shrouded building.

I stopped the car. When I turned off the headlights everything outside vanished. I rummaged in the glove box for the torch, praying that the batteries still worked. A yellow beam sputtered into life when I turned it on. My pulse thudded in my ears as I opened the car door and quickly shone the torch around. No-one leaped out; its beam revealed only trees. Through them I could make out the solid blackness of the lake. The rain soaked me, drowning out any noise as I went to the back of the Land Rover and took out the heavy socket spanner from the toolbox. Reassured only slightly by its weight, I started towards the building.

The van parked outside was old and rusty. The back doors were fastened with a piece of string. When I untied it they swung open with a creak. Inside was a collection of gardening equipment: spades, forks, even a wheelbarrow. I looked at the spool of wire it also held and thought that Carl Brenner had told his brother the truth. The snare that had injured Scott hadn't been one of his.

Neither had any of the others.

As I was turning away the torch beam fell on something else. Lying on top of a collection of tools was a clasp knife. It hadn't been folded up, and the exposed blade was serrated like a miniature saw. It was crusted with black.

I knew I was looking at the weapon that had killed Sally Palmer's dog.

I jumped as there was a sudden flash of lightning. The thunder followed almost immediately, a raging bellow that shook the air. I checked my phone again, not really expecting there to be a signal. There wasn't. Leaving the van I went towards the low building, and felt something snag my thigh. I looked down to see a rusty wire fence running through the undergrowth. Hanging from it were dozens of dark objects. At first I couldn't make out what they were, then I shone the torch on the nearest shapes and saw a gleam of bone. The bodies of small birds and animals had been hung on the wire and left to rot.

Dozens of them.

The rain was drumming through the trees as I picked my way along the wire fence. After a few yards it simply stopped, the strands lying curled and broken in the grass. I stepped over them, continued to circle the building. It was a squat, featureless block, without doors or windows. In places its concrete walls had spalled away to reveal a skeleton of reinforcing rods. But it was only when I reached the far side and saw the deep-set door and single, narrow window that I understood what this place was. It was an old air-raid bunker. I knew quite a few country houses had them, little more than latter-day follies built at the start of the Second World War, most of them never used.

But someone had found a use for this one.

Moving as quietly as I could, I went to the door. It was steel, rusted to a dull red. I expected it to be locked, but it swung open when I pushed.

A waft of musty air greeted me. I stepped inside, my heart thudding. The torch revealed a single room, empty except for dead leaves curled on the floor. I shone the light around the bare walls, and then the beam fell on a second door, hidden away almost invisibly in a corner.

A noise behind me made me spin around in time to see the outer door swinging shut. I made a grab for it, but not in time. The bang was shockingly loud. As its echoes died I knew I'd just announced my arrival to anyone inside.

But there was nothing to do but go on. No longer worried about keeping quiet, I went to the second door. When I opened it I was looking at the top of a narrow flight of steps. Above them a feeble light bulb cast a sickly illumination.

I turned off the torch and started down.

The air was stale and fetid. I recognized the flavours of death in it, tried to shut my mind to what that might mean. The steps bent away, doubling back on themselves. After one final turn I emerged into a long, low cellar. It seemed much bigger than the concrete structure above, as though the shelter had been built on older foundations. The far end disappeared into darkness. A light bulb hung low over a workbench, its weak glow revealing a bewildering profusion of shapes and shadows.

I stood transfixed by the sight in front of me.

The entire ceiling was hung with animal and bird corpses. Foxes, rabbits, ducks, all suspended like some macabre exhibit. Many of them had rotted to mummified skin and bone, while others showed more recent putrefaction. All were mutilated. Lacking heads or limbs, they swung with hypnotic slowness in time to some faint draught.

I wrenched my eyes away and looked around the cellar. More images clamoured for my attention. A desk lamp stood on a workbench, aimed into an empty corner of the cellar. Picked out by its harsh light was a rope, one end trailing, the other tied to a metal ring. On the workbench itself was a selection of old tools and vices, given a hideous new significance in this setting. And then I saw an object that seemed even more obscenely out of place.

Draped over a chair, its front an intricate patterning of lace fleurs-de-lis, was an ornate wedding dress. It was soaked in blood.

The sight of it brought me out of my shock. 'Jenny!' I shouted.

From the shadows at the far end of the cellar there was an answering movement. A figure slowly emerged, and then George Mason's grandson moved into the light.

He wore the same harmless expression as always. But there seemed nothing harmless about him now. He was a big man, I realized, taller and broader than me. His jeans and combat jacket were stained with blood.

He wouldn't look directly at me, shifting his eyes instead between my chest and shoulders. His hands were empty, but I could see there was a knife sheath hanging under his stained jacket.

I gripped the socket spanner. 'Where is she?' My voice was cracked.

'You shouldn't be down here, Dr Hunter.' He sounded apologetic. As he spoke he was unhurriedly reaching towards the knife sheath. He seemed as surprised as I was when he discovered it was empty.

I took a step towards him. 'What have you done to her?'

He was looking on the floor around him as if expecting to see the lost knife. 'Who?'

I turned the desk lamp so its light struck him. He raised a hand to shield his eyes. And as the light spilled into the corners behind him, I saw a naked shape half-hidden behind a wall.

My breath caught in my throat.

'Don't,' Mason said, squinting against the light.

I ran at him then. I raised the spanner, aiming to swing it into that docile face with all my strength, and as I did my arm snagged the animals hanging from the low ceiling. I was engulfed in a reeking avalanche of fur and feathers. Choking, I swept them aside in time to see Mason lunging at me. I tried to duck, but he was grabbing for the spanner. I still had the torch in my other hand. I swung it at him, catching him a glancing blow on his head. He yelled and lashed out, and I tumbled backwards, the spanner and torch flying from my hands to clatter to the floor. I fell against the workbench, and a spasm of fire shot through my back as it struck the corner of a vice.

The breath exploded from me as Mason's shoulder rammed into my stomach. I felt myself being bent backwards, the vice still digging into my spine. I looked into his face, and saw his placid blue eyes still untroubled as he eased his forearm up to my throat and began to push. I managed to wrench free one of my hands, tried to pull his forearm off my throat. He shifted slightly, leaning more of his weight on it, and reached for something on the workbench. I heard metal scrape on wood as he tried to take a chisel from a wooden block. I grabbed hold of his arm, but that left my throat unprotected. He gazed down at me as he increased the pressure, still groping for the chisel. Sparks of light were appearing in my vision. He glanced towards the chisel, and as he did I saw movement beyond him.

It was Jenny. She was moving with agonizing slowness towards what looked like a pile of feathers lying on the floor. As she struggled to pull something from beneath it, I forced myself to stare into Mason's calm face rather than at whatever she was doing. I tried to bring my knee into his groin but we were too close. Instead I raked my shoe down his shin. He gave a grunt, and I felt the weight on my throat ease fractionally. But from beside us there was a thud as the block containing the chisels fell over. I watched as Mason's fingers scrabbled like thick spiders' legs, tugging one of the chisels free inch by inch despite my hand pulling at his arm. A flicker of movement caught my eye. On the edge of my vision I saw Jenny trying to stand up. She was kneeling, leaning against the wall as she clutched something in front of her.

Then Mason had pulled one of the chisels from the block. Now instead of trying to hold his arm back I was struggling to push it away. I felt a growing panic as I realized how strong he was. My arm started to shake as he forced the chisel steadily nearer. Sweat dripped from his face onto mine, but other than that there was no sign of exertion in the bland features above me. He wore the same expression of gentle concentration as when he tended his plants.

Without warning he wrenched the opposite way, tearing his arm free. I clutched at it as he raised the chisel above my head, knowing I couldn't stop him. Suddenly he screamed and arched backwards. The arm that had pinned my throat was gone. I looked up to see Jenny swaying unsteadily behind him, naked and covered in blood. She was holding a huge-bladed knife, but it dropped from her fingers even as I looked. As it rang onto the floor Mason roared and swung his arm against her.

She fell bonelessly. I threw myself at him. We landed in a heap, and he cried out again. He pushed me off, tried to crawl away, and I saw the spreading stain of blood on his back. He was trying to reach the knife. I scrabbled over him, and as I did my foot kicked something hard. I looked down, saw the socket spanner. As Mason grabbed for the knife I snatched the spanner up and brought it down onto the stab wound in his back. He howled, and as he turned to face me I swung it at his head.

The impact hurt my hand. Mason dropped without a sound. I raised the spanner to hit him again but there was no need. Gasping, I waited until I was sure he wasn't going to move again, and then went to Jenny. She was lying where she'd fallen. I gently turned her over, feeling my heart miss when I saw the blood. She had cuts all over her body, some tiny, others deep slashes. The one in her cheek was almost to the bone, and when I saw what Mason had done to her foot I wanted to club him again. I almost cried with relief when I felt the pulse in her throat. It was weak and irregular, but she was alive.

'Jenny, Jenny, it's me, it's David.'

Her eyes fluttered open. '... David...' It came out as a whisper, and I felt my relief turn to ice when I caught the sweet chemical odour of her breath.
Ketoacidosis.
Her body had started to break down its own fats, producing toxic levels of ketones in her blood. She needed insulin, fast.