'Two murders so far. Any more?'
'It's not amusing. Mrs Larcombe's death was a fresh pointer – clue, if you like. She was a careful woman. Who would she let in to her house at night without fear? The local doctor. You said you needed to use her phone for an emergency?'
Robson ran his tongue briefly over his lips. In the dim light there was moisture on his brow, but the muzzle of the Luger aimed at Tweed's chest was steady.
'One thing which put me off the track,' Tweed went on. He had to keep Robson talking. 'Barrymore kept making clandestine phone calls from a public box in Minehead. What was wrong with using the phone at Quarme Manor?'
An unpleasant smile. 'A touch of romance, Tweed. Barrymore has fallen in love with a woman in London, hopes she will agree to marry him. But not sure of his chances. If it doesn't come off he'll still need Mrs Atyeo to run Quarme Manor. So he goes to extreme lengths to make sure she doesn't know anything. She might up and leave.'
'Extraordinary.' Tweed was momentarily non-plussed. 'A small domestic detail I never dreamed of.'
'Like your theories. All bits and pieces…'
'Which complete the jigsaw. And expose the face of Dr Robson. The killing of Sam Partridge on Exmoor was another pointer. The knife was driven in at exactly the right angle, the pathologist told me. A doctor would know how to do that. Much better than ex-commandos who had grown rusty with the passage of time. And Harry Masterson, who visited you, sent me a clue. Endstation. A clever clue. Pointing in two directions – here to your bungalow, Endpoint, and describing the atmosphere down at Porlock Weir, the end of the world. Harry was clever -I think he guessed it was you. He hoped to get confirmation by telling all three of you he was flying to Greece – to see which one of you turned up when he arrived.'
'I didn't.' Robson gripped the trigger of the Luger more firmly under the lampshade. 'I'm holding this gun on you because I appear to face a lunatic with a gun under his own arm.' He glanced at his watch.
'No. You sent a message to Doganis to do the job for you.' Tweed noted the glance at the time – which must be running out. But like a real professional, Robson was curious as to how he had tripped up. 'And,' Tweed went on, 'you fired at my Mercedes, aiming to miss – you couldn't afford the furore which would follow my murder at that stage.'But you aimed – literally – to throw suspicion on Kearns. I'd just left his house.'
'You simply have no proof of these mad assertions.'
'Then take me up into the conning tower where you spend so much time at night. That curious structure which is supposed to be a watch-tower. Then I can satisfy myself there is no transceiver up there. Plus an aerial which automatically elevated while you were transmitting to Florakis in Greece, receiving messages from him. The retracting aerial on a Mercedes gave me that idea.'
The Luger wavered, then steadied. Robson's eyes became colder still. No smile. The bedside manner had vanished. His face became a frozen image, reminded Tweed of pictures of the statues on Easter Island.
'You're clever, I'll grant you that. But it was all in a great cause. Lenin's cause which I embraced when I was a young man. The cause Gorbachev is trying to pervert with his mad glasnost '
'You killed Partridge because he was getting too close to the truth,' Tweed went on. 'You killed Mrs Larcombe because her window creaked and you heard it that first night you collected Anton Gavalas off the Oporto. You couldn't afford to risk her seeing you the second time when you brought the Stinger launchers ashore.'
'Dear me.' Robson's lips curled cruelly. 'You have worked it all out.'
'And you killed Jill Kearns in London. Why?'
'Simply to divert attention to London from Exmoor. She was a foolish sort of woman…'
Tweed saw movement by the gap in the curtains out of the corner of his eye. There was a tremendous smashing sound, glass breaking under a hammerblow. He thought he saw a rifle butt. Robson glanced at the window, swung the Luger round. Tweed reached up, grasped the plastic shade, pulled it down over the bulb. There was a brief flash, the room was plunged into darkness. Tweed threw himself sideways on to the floor as the Luger roared. Confusion. Bodies moving, feet running. A door shut. A vehicle's engine started up, moving at speed down the slope, skidded as though turning along the lane.
Tweed felt his way into the hall, along the wall, opened the front door. The sound of a second vehicle starting up, driving along the lane towards Quarme Manor. He ran down the slope, ran all the way back to where the Mercedes was parked, jumped in behind the wheel. Paula had released the locks as she saw him coming,
'Two vehicles driving at speed along the lane,' she said tersely. 'First a four-wheel-drive job, like we saw parked by the side of Robson's house. Then a car. Couldn't see the make.'
'We must hurry.' Tweed was driving through the gateway, turning along the lane, lights full on, driving away from the Doone Valley. In his wing mirror he saw a police patrol car coming up behind him. He passed Quarme Manor, reached the ford gushing with deep water, drove through it. Behind him the patrol car stopped half-way through the ford. He drove up the hill, kept going when he turned right on the coast road, heading back towards Minehead.
The Toll Road!' Paula shouted.
He was almost past it, swung the wheel, began the descent and slowed as he nearly took them over the brink. They arrived in front of The Anchor and Newman was just climbing into the Cortina. He left it as Tweed approached, dived into the back.
'Two vehicles heading for the pebble beach,' he reported.
'I know. It was Robson…'
'Robson?' Paula gasped. 'I thought it was Kearns.'
They had driven along the track, began bouncing across the pebble-strewn beach. Something jumped up under the Mercedes, there was a loud clang. The car stopped. Tweed jumped out, began running over the pebbles, careful not to lose his footing. In the distance both vehicles had also been stopped by the terrain. He glimpsed two running figures, a hundred yards between them. Behind him Newman ran with Paula, ready to catch her arm if she slipped. Then the searchlight beam came on, aimed at the foot of the looming cliffs. The light shone from the edge of the sea.
It took Newman a moment to grasp the searchlight was mounted at the bow of a motorboat which had been driven up on to the edge of the beach. Tweed ran on past the sign reading, Warning. Keep clear. Danger of cliff falls. He passed an empty Renault, then the four-wheel drive vehicle.
Robson was caught in the searchlight beam as he kept to the lee of the cliffs. A shot rang out. The bullet sang past Newman's head. Paula was fumbling for her Browning when Newman saw inside the beached boat a bulky figure, clad like a seaman, aiming a gun. He swung up the Magnum, gripped in both hands, fired two shots. The seaman was hurled back, tried to recover his balance, toppled, fell over the stern of the boat. His body drifted with the outgoing tide.
Robson, hair awry, flung up a hand to shield his eyes against the glare of the light supposed to lead him to the boat. Tweed saw the tall figure a hundred yards from Robson reach inside a satchel slung from his shoulder. He hoisted his right arm like a cricket bowler, threw an object high up the cliff.
His hand delved again inside the satchel, came out and his arm hoisted a second time. There was a deafening crack on the cliff top above Robson. Tweed stopped, grabbed Paula by the forearm to halt her. She was gasping for breath as the second grenade detonated.
From high up on the cliff they heard a muttering rumble, prelude to a cataclysm. A vast slab of cliff broke free, slowly slid downwards, then faster. Robson looked up, opened his mouth. A cascade of rocks roared towards him. He turned to flee. The cascade engulfed him, like a rising tide, swallowing him up to the waist. In the searchlight beam he was a man half buried alive. He opened his mouth again and screamed and screamed, waving his arms. Then a Niagara of boulders stormed down, bounding against each other. One struck his head and seemed to telescope it deep into his body. Paula gulped.