The Sweetness at the Bottom of the Pie

'Hmm,' the Inspector said. 'An interesting point. And you were on the spot at the time of death. If things hadn't gone exactly as they did, it might well be your neck in the noose.”

I hadn't thought of that. A goose walked over my grave and I shivered.

The Inspector went on. “Arguing against it, however, are your physical size, your lack of any real motive, and the fact that you haven't exactly made yourself scarce. Your average murderer generally gives the police as wide a berth as possible, whereas you… well, ubiquitous is the word that springs to mind. Now then, you were saying?”

'Stanley ambushed Bonepenny in our garden. Bonepenny was a diabetic, and—'

'Ah,' the Inspector said, almost to himself. 'Insulin! We didn't think to test for that.'

'No,' I said. 'Not insulin: carbon tetrachloride. Bonepenny died from having carbon tetrachloride injected into his brain stem. Stanley bought a bottle of the stuff from Johns, the chemists, in Doddingsley. I saw their label on the bottle when he filled the syringe in the Pit Shed. You've probably already found it under all the rubbish.'

I could tell by his face that they hadn't.

'Then it must have rolled down the pipe,' I said. 'There's an old drain that runs down to the river. Some one will have to fish it out.'

Poor Sergeant Graves! I thought.

'Stanley stole the syringe from the kit in Bonepenny's room at the Thirteen Drakes,” I added, without thinking. Damn!

The Inspector pounced. “How do you know what was in Bonepenny's room?” he asked sharply.

'Uh. I'm coming to that,' I said. 'In a few minutes.

'Stanley believed you'd never detect any possible traces of carbon tetrachloride in Bonepenny's brain. Jolly good thing you didn't. You might have assumed it came from one of Father's bottles. There are gallons of the stuff in the study.'

Inspector Hewitt pulled out his notebook and scrawled a couple of words, which I assumed were carbon tetrachloride.

'I know it was carbon tet because Bonepenny blew the last whiff of the stuff into my face with his dying breath,' I said, wrinkling my nose and making an appropriate face.

If an Inspector's complexion can be said to go white, Inspector Hewitt's complexion went white.

'You're certain about that?'

'I'm quite competent with the chlorinated hydrocarbons, thank you.'

'Are you telling me that Bonepenny was still alive when you found him?'

'Only just,' I said. 'He. uh. passed away almost immediately.'

There was another one of those long, crypt-like silences.

'Here,' I said, 'I'll show you how it was done.'

I picked up a yellow lead pencil, gave it a couple of turns in the sharpener, and went to the corner where the articulated skeleton dangled at the end of its wire.

'This was given to my great-uncle, Tarquin, by the naturalist Frank Buckland,' I said, giving the skull an affectionate rub. 'I call him Yorick.'

I did not tell the Inspector that Buckland, in his old age, had given his gift in recognition of young Tar's great promise. “To the Bright Future of Science,” Buckland had written on his card.

I brought the sharpened point of the pencil round to the top of the spinal column, shoving it slowly in under the skull as I repeated Pemberton's words in the Pit Shed:

''Angle in a bit to the side. in through the splenius capitus and semispinalis capitis, puncture the atlantoaxial ligament, and slide the needle over the —’”

'Thank you, Flavia,' the Inspector said abruptly. 'That's quite enough. You're quite sure that's what he said?'

'His precise words,' I said. 'I had to look them up in Gray's Anatomy. The Children's Encyclopaedia has several plates, but not nearly enough detail.”

Inspector Hewitt rubbed his chin.

'I'm sure Dr. Darby could find the needle mark on the back of Bonepenny's neck,' I added helpfully, 'if he knew where to look. He might inspect the sinuses, as well. Carbon tetrachloride is stable in air, and might still be trapped there, since the man was no longer breathing.

'And,' I added, 'you might remind him that Bonepenny had a drink at the Thirteen Drakes just before he set out to walk to Buckshaw.'

The Inspector still looked puzzled.

'The effects of carbon tetrachloride are intensified by alcohol,' I explained.

'And,' he asked with a casual smile, 'do you have any particular theory about why the stuff might still be in his sinuses? I'm no chemist, but I believe carbon tetrachloride evaporates very rapidly.”

I did have a reason, but it was not one I was willing to share with just anyone, particularly not the police. Bonepenny had been suffering from an extremely nasty head cold: a head cold which, when he breathed the word “Vale' into my face, he had transmitted to me. Thanks buckets, Horace! I thought.

I also suspected that Bonepenny's plugged nasal passages might well have preserved the injected carbon