She coughed again, and shook her head ruefully. ''I can do a trick with the rope!' he shouted back. He'd been playing cowboy all day with a rope he'd found in a shed.'
Just as Sally had said. Grace must be telling me the truth.
'He climbed up here before we could stop him. Rupert was furious. He grabbed at Robin to give him a shake, but his iron brace slipped on the bricks. Robin--'
Now, silent tears were coursing down her face.
'Fell,' I said. There was no need to elaborate.
'Fell,' she repeated, and the way she dragged out the word made it echo from the bricks, hovering grotesquely in the round chamber: a sound I would never forget.
With it came an idea.
'Was it Rupert who thought of the Punch and Judy story? That Robin had been playing out the scene with Punch and the hangman?'
'Where did you hear that?' she demanded, suddenly lucid, canny. I thought of Mad Meg's smile in Gibbet Wood; these two women had so much in common.
'Your evidence to the jury at the inquest,' I answered. 'It's public knowledge.'
I did not think it necessary to add that I had heard it from Sally.
'He made me do it,' she said, wiping her eyes on the sleeve of the sailor suit, and I realized for the first time how much she looked like Robin. Once noticed, the resemblance was eerie.
'Rupert told me no one would ever know. Robin's neck was broken in the fall, and if we ... if I ...'
A shudder ran through her entire body.
'If I wouldn't do as he ordered, he'd tell Gordon what had been going on between us. I'd be the one to be punished. Gordon's quick with his fists, you know.'
As was Rupert. I'd seen the bruises he left on Nialla's arm. Two quick-tempered men. And rather than fighting it out between them, they both had made punching bags of their women.
'Was there no one you could talk to? The vicar, for instance?'
This seemed to set her off, and she was racked by a siege of coughing. I waited until she had finished.
'The vicar,' she said, gasping for breath, 'is the only one who has made these past five years bearable.'
'He knew about Robin?' I could hardly believe it!
'A clergyman's lips are sealed,' she said. 'He's never breathed a word. He tried to come to Culverhouse Farm once a week, just to let me talk. The man's a saint. His wife thought he was--'
'In love with you.'
She nodded, squeezing her eyes tight shut, as if she were in excruciating pain.
'Are you all right?' I asked.
'Wait a few minutes,' she said, 'and I shall be fine.'
Her body was crumbling before my eyes, tipping towards the opening into the shaft.
I grabbed at her arm, and as I did so, a glass bottle that she had been clutching in her fist fell to the brick floor and bounced away, clinking, into the corner, sending a pigeon clattering up towards the opening. I dragged Grace into the center of the chamber and sprang after the bottle, which had come to rest in a mound of ancient guano.
The label told me all I needed to know:
Rat poison! The stuff was in common farm use, particularly on those farms whose henhouses attracted vermin. There was still one of the white tablets in the bottom. I removed the stopper and smelled it. Nothing.
Grace was now flat on the floor, twitching, her limbs flailing.
I dropped to my knees and sniffed her lips. The scent of bitter almonds.
The tablets of calcium cyanide, I knew, as soon as they met the moisture of her mouth, throat, and stomach, would produce hydrogen cyanide, a toxic gas that could kill in five minutes.
There was no time to waste. Her life was in my hands. I almost panicked at the thought--but I didn't.
I took a careful look round, registering every detail. Aside from the candle, the shrine, the photograph of Robin, and his toy sailboat, there was nothing in the chamber but rubble.
Well, not quite nothing. On one wall was an ancient watering device for the birds: an inverted glass bulb and tube whose gravity feed kept a dish full for the pigeons to dip their beaks into. From the clarity of the water, it seemed as if Grace had recently filled it.
A glass cock allowed the gravity feed to be turned off. I gave it a twist and pulled the full dish carefully out of its spring clips.
Grace moaned horribly on the floor, apparently no longer aware of my presence.
Treading carefully, I moved to the spot from which the pigeon had flown. Feeling gingerly in the straw with my fingertips, I was quickly rewarded. An egg. No, two little eggs!
Putting them down gently beside the dish, I picked up the sailboat. At the bottom of its tin keel was a lead weight. Damn!
