Thud

All this flashed past in a second. She said, `Let's just get down there and get it done and get out, shall we?'

There was still a crowd hanging around near the entrance. Amongst them was Otto Chriek, who gave Carrot a little shrug.

There were still guards on duty, too, but it was clear that someone had been talking to them. They nodded to the squad when they arrived. One of them even opened the door, very politely.

Carrot beckoned the other watchmen closer.

`Everything we say will be overheard, understand?' he said. `Everything. So be careful. And remember - as far as they are concerned, you can't see in the dark.'

He led the way inside, to where Helmclever stood, beaming and edgy.

`Welcome, Head Banger,' said the dwarf.

`Er, if we are using Morporkian, I would prefer Captain Carrot,' said Carrot.

`As you wish, smelter,' said the dwarf. `The elevator awaits!'

As they descended, Carrot said, `What powers this, please?'

`A Device,' said Helmclever, pride breaking out over his nervousness.

`Really? You have many Devices?' said Carrot. `An axle and an average bar.'

`An average bar? I've only ever heard of them.'

`We are fortunate. I will be happy to show it to you. It is invaluable for food preparation,' Helmclever gabbled. `And down below we have a number of cubes, of varying powers. Nothing may be withheld from the smelter. I am ordered to show you everything you wish to see and tell you everything you wish to know.'

`Thank you,' said Carrot, as the elevator stopped in blackness speckled with the corpse glow of vurms. `How large are your diggings here?'

`I cannot tell you that, said Helmclever quickly. `I do not know. Ah, here is Ardent. I will go back up-'

`No, Helmclever, remain with us, please,' said a darker shadow in the gloom. `You should see this, too. Good day to you, Captain Carrot, and' - Angua detected an element of distaste - `ladies. Please follow me. I am sorry for the lack of light. Perhaps your eyes will adapt. I will be happy to describe to you any object that you touch. Now I will lead you to the place where the dreadful occurrence ... occurred.'

Angua looked around as they were led along the tunnel, noting that Carrot had to walk with his knees slightly bent. Head Banger, eh? Funny, you never mention that to the lads!

Every dozen yards or so Ardent stopped in front of a round door, invariably with the vurms clustered around it, and turned a wheel. The doors creaked when they opened, and they opened with a ponderousness that suggested they were heavy. Here and there in the tunnels were ... things, mechanical things, hanging from the wall and clearly there with a purpose. Vurms glowed around them. She hadn't got a clue what the objects were for, but Carrot greeted them with enthusiastic glee, like a schoolboy.

`You have air bells and water boots, Mr Ardent! I've only ever heard of them!'

`You were raised in the good rock of Copperhead, were you not, captain? Mining in this wet plain is like digging tunnels in the sea.'

`And the iron doors are quite watertight, are they?'

`Yes, indeed. Airtight, too.'

`Remarkable! I should like to visit again, when this wretched business is over. A dwarf mine under the city! It's quite hard to believe!'

`I'm sure that could be arranged, captain:

And that was Carrot at work. He could sound so innocent, so friendly, so ... stupid, in a puppy-dog kind of way, and then he suddenly became this big block of steel and you walked right into it. By the smell of it, Sally was watching him with interest.

Be sensible, Angua told herself. Don't let the vampire get to you. Don't start believing you're stupid and hairy. Think clearly. You do have a brain.

Surely people could go mad living in this murk? Angua found it easier to close her eyes. Down here, her nose worked better without distraction. Darkness helped. With her eyes shut, various faint colours danced across her brain. Without the stink of the damned vampire, though, she would have been able to pick up a lot more. The stench poisoned every sensation. Hold on, don't think like that, you're just letting your mind do the thinking for you ... hang on, that's wrong...

There was a faint outline in the corner of the next chamber, which was quite large. It looked like ... an outline. A chalk outline. A glowing chalk outline.

`I understand this is the approved method?' said Ardent. `You will be aware of night chalk, captain? It is made of crushed vurm. The glow persists for about a day. On the floor here you will see, or rather, you will feel the club that dealt him his death blow. Just under your hand, captain. There is blood on it. I regret the

darkness, but we kept the vurms out. They would have feasted, you understand.'

Angua saw Carrot, outlined in his permanent smell of soap, feel

his way across the space. His hand touched another metal door. `Where does this go, sir?' he said, tapping it. `To the outer chambers.'

`Was it open at the time the troll attacked the grag?' You really assume a troll did it? Angua wondered. `I believe so,' said Ardent.