‘Come on , Stanley!’ Moist snapped, turning away from the horrible sight and the fascinating thought. The boy followed, reluctantly, calling for the damn cat all the way to the door.

The air outside struck like a knife, but there was a round of applause from the crowd and then a flash of light that Moist had come to associate with eventual trouble.

‘Good eefning, Mr Lipvig!’ said the cheery voice of Otto Chriek. ‘My vord, if ve vant news, all ve have to do is follow you!’

Moist ignored him and shouldered his way to Miss Dearheart who, he noticed, was not beside herself with worry.

‘Is there a hospice in this city?’ he said. ‘A decent doctor, even?’

‘There’s the Lady Sybil Free Hospital,’ said Miss Dearheart.

‘Is it any good?’

‘Some people don’t die.’

‘That good, eh? Get him there right now! I’ve got to go back in for the cat!’

‘You are going to go back in there for a cat ?’

‘It’s Mr Tiddles,’ said Stanley primly. ‘He was born in the Post Office.’

‘Best not to argue,’ said Moist, turning to go. ‘See to Mr Groat, will you?’

Miss Dearheart looked down at the old man’s bloodstained shirt. ‘But it looks as though some creature tried to—’ she began.

‘Something fell on him ,’ said Moist shortly.

‘That couldn’t cause—’

‘Something fell on him’, said Moist. ‘That’s what happened.’

She looked at his face. ‘All right,’ she agreed. ‘Something fell on him. Something with big claws.’

‘No, a joist with lots of nails in it, something like that. Anyone can see that.’

‘That’s what happened, was it?’ said Miss Dearheart.

‘That’s exactly what happened,’ said Moist, and strode away before there were any more questions.

No point in getting the Watch involved in this, he thought, hurrying towards the doors. They’ll clump around and there won’t be any answers for them and in my experience watchmen always like to arrest somebody . What makes you think it was Reacher Gilt, Mr… Lipwig, wasn’t it? Oh, you could tell , could you? That’s a skill of yours, is it? Funny thing, we can tell sometimes, too. You’ve got a very familiar face, Mr Lipwig. Where are you from?

No, there was no point in getting friendly with the Watch. They might get in the way.

An upper window exploded outwards, and flames licked along the edge of the roof; Moist ducked into the doorway as glass rained down. As for Tiddles… well, he had to find the damn cat. If he didn’t, it wouldn’t be fun any more. If he didn’t risk at least a tiny bit of life and a smidgen of limb, he just wouldn’t be able to carry on being him.

Had he just thought that?

Oh, gods. He’d lost it . He’d never been sure how he’d got it, but it had gone. That’s what happened if you took wages. And hadn’t his grandfather warned him to keep away from women as neurotic as a shaved monkey? Actually he hadn’t, his interest lying mainly with dogs and beer, but he should have done.

The vision of Mr Groat’s chest kept bumping insistently against his imagination. It looked as though something with claws had taken a swipe at him, and only the thick uniform coat prevented him from being opened like a clam. But that didn’t sound like a vampire. They weren’t messy like that. It was a waste of good food. Nevertheless, he picked up a piece of smashed chair. It had splintered nicely. And the good thing about a stake through the heart was that it also worked on non-vampires.

More ceiling had come down in the hall, but he was able to dodge between the debris. The main staircase was at this end and completely untouched, although smoke lay on the floor like a carpet; at the other end of the hall, where the mountains of old mail had been, the blaze still roared.

He couldn’t hear the letters any more. Sorry, he thought. I did my best. It wasn’t my fault…

What now? At least he could get his box out of his office. He didn’t want that to burn. Some of those chemicals would be quite hard to replace.

The office was full of smoke but he dragged the box out from under his desk and then spotted the golden suit on its hanger. He had to take it, didn’t he? Something like that couldn’t be allowed to burn. He could come back for the box, right? But the suit… the suit was necessary . There was no sign of Tiddles. He must have got out, yes? Didn’t cats leave sinking ships? Or was it rats? Wouldn’t the cats follow the rats? Anyway, smoke was coming up between the floorboards and drifting down from the upper floors, and this wasn’t the time to hang around. He’d looked everywhere sensible; there was no sense in being where a ton of burning paper could drop on your head.

It was a good plan and it was only spoiled when he spotted the cat, down in the hall. It was watching him with interest.

‘Tiddles!’ bellowed Moist. He wished he hadn’t. It was such a stupid name to shout in a burning building.

The cat looked at him, and trotted away. Cursing, Moist hurried after it, and saw it disappear down into the cellars.

Cats were bright, weren’t they? There was probably another way out… bound to be…

Moist didn’t even look up when he heard the creaking of wood overhead, but ran forward and went down the steps five at a time. By the sound of it, a large amount of the entire building smashed on to the floor just behind him, and sparks roared down the cellar passage, burning his neck.

Well, there was no going back, at least. But cellars, now, they had trapdoors and coal shutes and things, didn’t they? And they were cool and safe and—

—just the place where you’d go to lick your wounds after being smashed in the mouth with a sackful of pins, right?

An imagination is a terrible thing to bring along.

A vampire, she’d said. And Stanley had hit ‘a big bird’ with a sackful of pins. Stanley the Vampire Slayer, with a bag of pins. You wouldn’t believe it, unless you’d seen him in one of what Mr Groat called his ‘little moments’.

You probably couldn’t kill a vampire with pins…

And after a thought like that is when you realize that however hard you try to look behind you, there’s a behind you, behind you, where you aren’t looking. Moist flung his back to the cold stone wall, and slithered along it until he ran out of wall and acquired a doorframe.

The faint blue glow of the Sorting Engine was just visible.

As Moist peered into the machine’s room, Tiddles was visible too. He was crouched under the engine.

‘That’s a very cat thing you’re doing there, Tiddles,’ said Moist, staring at the shadows. ‘Come to Uncle Moist. Please?’

He sighed, and hung the suit on an old letter rack, and crouched down. How were you supposed to pick up a cat? He’d never done it. Cats never figured in grandfather’s Lipwigzer kennels, except as an impromptu snack.

As his hand drew near Tiddles, the cat flattened its ears and hissed.

‘Do you want to cook down here?’ said Moist. ‘No claws, please.’

The cat began to growl, and Moist realized that it wasn’t looking directly at him.

‘Good Tiddles,’ he said, feeling the terror begin to rise. It was one of the prime rules of exploring in a hostile environment: do not bother about the cat. And, suddenly, the environment was a lot more hostile.

Another important rule was: don’t turn round slowly to look. It’s there all right. Not the cat. Damn the cat. It’s something else.

He stood upright and took a two-handed grip on the wooden stake. It’s right behind me, yes? he thought. Bloody well bloody right bloody behind me! Of course it is! How could things be otherwise?

The feeling of fear was almost the same as the feeling he got when, say, a mark was examining a glass diamond. Time slowed a little, every sense was heightened, and there was a taste of copper in his mouth.

Don’t turn round slowly. Turn round fast.