CLAY OF MY CLAY, THOU SHALT NOT KILL! THOU SHALT NOT DIE!

Samuel Vimes dreamed about Clues.

He had a jaundiced view of Clues. He instinctively distrusted them. They got in the way.

And he distrusted the kind of person who'd take one look at another man and say in a lordly voice to his companion, 'Ah, my dear sir, I can tell you nothing except that he is a left-handed stonemason who has spent some years in the merchant navy and has recently fallen on hard times,' and then unroll a lot of supercilious commentary about calluses and stance and the state of a man's boots, when exactly the same comments could apply to a man who was wearing his old clothes because he'd been doing a spot of home bricklaying for a new barbecue pit, and had been tattooed once when he was drunk and seventeen[14] and in fact got seasick on a wet pavement. What arrogance! What an insult to the rich and chaotic variety of the human experience!

It was the same with more static evidence. The footprints in the flowerbed were probably in the real world left by the window-cleaner. The scream in the night was quite likely a man getting out of bed and stepping sharply on an upturned hairbrush.

The real world was far too real to leave neat little hints. It was full of too many things. It wasn't by eliminating the impossible that you got at the truth, however improbable; it was by the much harder process of eliminating the possibilities. You worked away, patiently asking questions and looking hard at things. You walked and talked, and in your heart you just hoped like hell that some bugger's nerve'd crack and he'd give himself up.

The events of the day clanged together in Vimes's head. Golems tramped like sad shadows. Father Tubelcek waved at him and then his head exploded, showering Vimes in words. Mr Hopkinson lay dead in his own oven, a slice of dwarf bread in his mouth. And the golems marched on, silently. There was Dorfl, dragging its foot, its head open for the words to fly in and out of, like a swarm of bees. And in the middle of it all Arsenic danced, a spiky little green man, crackling and gibbering.

At one point he thought one of the golems screamed.

After that, the dream faded, a bit at a time.

Golems. Oven. Words. Priest. Dorfl. Golems marching, the thudding of their feet making the whole dream pulsate ...

Vimes opened his eyes.

Beside him, Lady Sybil said.'Wsfgl,' and turned over.

Someone was hammering at the front door. Still muzzy, head swimming, Vimes pulled himself up on his elbows and said, to the night-time world in general, 'What sort of a time do you call this?'

'Bingeley bingeley beep!' said a cheerful voice from the direction of Vimes's dressing-table.

'Oh, please

'Twenty-nine minutes and thirty-one seconds past five ay-emm. A Penny Saved is a Penny Earned. Would you like me to present your schedule for today? While I am doing this, why not take some time to fill out your registration card?'

'What? What? What're you talking about?'

The knocking continued.

Vimes fell out of bed and groped in the dark for the matches. He finally got a candle alight and half-ran, half-staggered down the long.stairs and into the hall.

The knocker turned out to be Constable Visit.

'It's Lord Vetinari, sir! It's worse this time!'

'Has anyone sent for Doughnut Jimmy?'

'Yessir!'

At this time of day the fog was fighting a rearguard action against the dawn, and made the whole world look as though it were inside a ping-pong ball.

'I poked my head in as soon as I came on shift and he was out like a light, sir!'

'How did you know he wasn't asleep?'

'On the floor, sir, with all his clothes on?'

A couple of Watchmen had put the Patrician on his bed by the time Vimes arrived, slightly out of breath and with his knees aching. Gods, he thought as he struggled up the stairs, it's not like the old truncheon-and-bell days. You wouldn't think twice about running half-way across the city, coppers and criminals locked in hot pursuit.

With a mixture of pride and shame he added: And none of the buggers ever caught me, either.

The Patrician was still breathing, but his face was waxy and he looked as though death might be an improvement.

Vimes's gaze roamed the room. There was a familiar haze in the air.

'Who opened the window?' he demanded.

'I did, sir,' said Visit. 'Just before I went to get you. He looked as though he needed some fresh air

'It'd be fresher if you left the window shut,' said Vimes. 'Okay, I want everyone, I mean everyone, who was in this place overnight rounded up and down in the hall in two minutes. And someone fetch Corporal Littlebottom. And tell Captain Carrot.'

I'm worried and confused, he thought. So the first rule in the book is to spread it around.

He prowled about the room. It didn't take much intelligence to see that Vetinari had got up and moved over to his writing-desk, where by the look of it he had worked for some time. The candle had burned right down. An inkwell had been overturned, presumably when he'd slipped off the chair. Vimes dipped a finger in the ink and sniffed it. Then he reached for the quill pen beside it, hesitated, took out his dagger, and lifted the long feather gingerly. There seemed to be no cunning little barbs on it, but he put it carefully on one side for Littlebottom to examine later.

He glanced down at the paper Vetinari had been working on.

To his surprise it wasn't writing at all, but a careful drawing. It showed a striding figure, except that the figure was not one person at all but made up of thousands of smaller figures. The effect was like one of the wicker men built by some of the more outlandish tribes near the Hub, when they annually celebrated the great cycle of Nature and their reverence for life by piling as much of it as possible in a great heap and setting fire to it. The composite man was wearing a crown. Vimes pushed the sheet of paper aside and returned his attention to the desk. He brushed the surface carefully for any suspicious splinters. He crouched down and examined the underside.

The light was growing outside. Vimes went into both the rooms alongside and made sure their drapes were open, then went back into Vetinari's room, closed the curtains and the doors, and sidled along the walls looking for any tell-tale speck of light that might indicate a small hole.

Where could you stop? Splinters in the floor? Blowpipes through the keyhole?

He opened the curtains again.

Vetinari had been on the mend yesterday. And now he looked worse. Someone had got to him in the night. How? Slow poison was the devil of a thing. You had to find a way of giving it to the victim every day.

No, you didn't... What was elegant was finding a way of getting him to administer it to himself every day.

Vimes rummaged through the paperwork. Vetinari had obviously felt well enough to get up and walk over here, but here was where he had collapsed.

You couldn't poison a splinter or a nail because he wouldn't keep on nicking himself...

There was a book half-buried in the papers, but it had a lot of bookmarks in it, mostly torn bits of old letters.

What did he do every day?

Vimes opened the book. Every page was covered with handwritten symbols.

You have to get a poison like arsenic into the body. It isn't enough to touch it. Or is it? Is there a kind of arsenic you can pick up through the skin?

No one was getting in. Vimes was almost certain of that.

The food and drink were probably all right, but he'd get Detritus to go and have another one of his little talks with the cooks in any case.

Something he breathed? How could you keep that up day after day without arousing suspicion somewhere? Anyway, you'd have to get your poison into the room.