"Honestly, Miss Telford," said Melissande earnestly, tucking a hand in the crook of Eudora's arm. "What true friend would deny you such a splendid opportunity?" With a little tug and a smile, she started the woman walking back along the street. "Did I mention His Majesty has heard of your light touch with sweet pastry?"

Eudora Telford gasped. "King Rupert's heard of my pastry? Your Highness!"

Melissande felt another stab of guilt. It was awful, playing on Eudora's pathetic sensibilities like this, but what other choice did she have?

I'll make it up to her somehow. Even if I have to armwrestle Rupert into extending her a real invitation. She is the Guild's secretary, after all. How bad could her jam rolls be?

Loud in the night-time silence, the wheezing chug-chug of Monk's approaching jalopy. "And here's the car," she said, waving at Bibby as two bug-eyed headlights cut through the gloom.

"Your Highness, Miss Telford," said Bibbie through the open driver's window. "All set to go?"

"Oh," said Eudora Telford, taken aback. "Miss Markham. You-you drive?"

Bibbie's perfect teeth gleamed. "Certainly, Miss Telford. Would you expect anything less from the great-niece of Antigone Markham?" Leaving the jalopy to idle, she got out and held the rear pa.s.senger door wide. "Please. Do have a seat."

But Eudora Telford hesitated. "Oh. Yes. D'you know, I'm just wondering, since you have this-this interesting vehicle, Your Highness, whether it would be possible for us to-to just drive a little further along so I can do this important favour for-for my friend. You know, before we discuss my visit to New Ottosland. The thing is-you see-that if I don't do what I promised, my-my friend will be dreadfully... disappointed."

Melissande looked at Eudora's white and frightened face. Drat that Permelia Wycliffe. She really had this rabbit browbeaten.

"Oh, we can't," said Bibbie quickly. "I'm so sorry, Miss Telford. There's been a gas leak in the area, and we really should leave. You can come back in the morning. I'll bring you myself."

"Gas leak?" said Eudora Telford, bewildered. "I didn't hear anything about a-"

"The car has a wireless in it," said Bibbie, with another dazzling smile. "I just heard the announcement." She began to usher Eudora Telford into the jalopy. "Come along. No time to waste. That's it, upsadaisy-"

"Go on, ducky," said Reg, from the shadows. "Get that silly woman out of here. I'm going back to help Gerald."

Of course she was.

"You're quite sure we can come back in the morning?" said Eudora Telford, settled in the back seat.

"Yes," said Melissande, stepping forward. "Of course. Because helping friends is always important. Come along, Miss Telford. I can't wait to tell you all about New Ottosland."

Reaching the far end of the street at last, Gerald ducked into the final darkened doorway and pulled the tracer crystal from his pocket. Good. The activation was still holding. He'd attached the other half of the tracer to Errol's black cashmere overcoat, while Errol was in his lab killing time by working on the new Ambrose Mark VI prototype.

Please, Errol, whatever you do, don't take it off.

The crystal pulsed a medium bright green, which meant Errol was about three hundred yards ahead, still moving. He'd have to be careful not to get too close. He'd had to keep his etheretic shield deactivated, and Errol would almost certainly notice something amiss in the ether now.

He slipped out of the doorway and started walking again, throwing a glance down the street behind him. Thankfully there was neither sight nor sound of Melissande or that dratted Eudora Telford, best friend of Ambrose's sister Permelia. Who was, apparently, upset about something going on in the company. Something a bit more disturbing than petty biscuit pilfering.

There's definitely a connection here. I don't know what, but there is one. Another problem I need to sort out...

A familiar rustling sound... a stirring in the air...

"Right," said Reg, landing hard on his shoulder. "Care to tell me what's really going on?"

He'd been expecting her, of course. "I already did," he said, resigned... but not displeased. "Errol's leading me to Haf Rottlezinder."

"And you're convinced, are you, that Errol's a villain?"

"Yes," he said shortly. "What I heard was... incriminating."

He'd left the poor residential neighbourhood behind. Now the surrounding buildings looked like warehouses. Abandoned. Dilapidated. Old businesses gone to rack and ruin. The industrial smoke was thicker here, gritty and tainted with a thaumic tang. Under that was the stench of sour water, spoiled with the effluvium from some factory or other. The darkness was oppressive, the silence a shroud. It even felt like he was breathing too loudly.

Reg cleared her throat. "So how did you get here from Wycliffe's?"

"The scooter."

"Then why are we walking? It can't be too safe walking around here."

"I'm just following Errol's lead," he said. "He drove from Wycliffe's to the other end of that laneway back there and parked. If he's walking now it's because Haf Rottlezinder told him to."

"And where is our pretty plonker?"

"Up ahead somewhere." He checked the tracer crystal. As he watched, the green pulse slowed... slowed... stopped. "All right. Either he's lost or he's reached his destination."

"The Errol Haythwaites of this world don't get lost, sunshine," said Reg. "Right. Stay here. I'll see what's what and come right back."

"No-Reg-"

But she was gone, her wings whispering through the menacing night.

Shivering, he hunched a little deeper into his own cheap coat and shoved the tracer in one pocket. Shrugged his left shoulder up and down against the slowly building ache. He was starting to regret bringing his First Grade staff with him. It had seemed like a good idea when he left Wycliffe's, but now it was getting heavier with every step. At times like this he missed his lowly Third Grade cherrywood staff, which had fitted so neatly inside his coat.

Maybe I can get Monk to-to fiddle a First Grader down to Third Grade size somehow. A sort of stealth staff. That might come in handy.

He was standing opposite a narrow, vacant lot that sat between two run-down buildings. It looked a bit like a missing tooth in a rotten smile. In the faint illumination from the gas lamps on the buildings behind it he saw that the lot was overrun with weeds. A rustle. A snarling hiss. A panicked squeak, silenced. Two large yellow eyes gleamed briefly then disappeared.

He shivered again. That's me. Slinking through the weeds in the dark, hunting. My father was a tailor. How did I get to be this?

The world around him looked slightly... flattened. With only one good eye he'd lost his depth perception. He hardly ever noticed the difference any more. Only at times like this, with so little light around, and so much danger. That was when he remembered that while he'd gained a lot, he'd lost something too.

He frowned into the distance, trying to see Reg. Oh, lord, Reg. How was he going to explain her to Sir Alec? Her and the girls. Because he couldn't not include them in his final report. Lying to Sir Alec was out of the question. If his intimidating superior didn't understand about their serendipitous involvement-about how hard it was to stop Reg sticking her beak in to save him at every opportunity...

Exactly how influential was Sir Alec? Could he take reprisals against Witches Inc.? Have Melissande recalled to New Ottosland? See Bibbie stripped of her thaumaturgical licence? Make Monk pay for his irrepressible sister? And what about Reg? All right, probably he couldn't do anything to her. If nothing else, she could outfly him. But what if he made things so difficult she had to leave Ottosland? Where would she go? Back to New Ottosland, probably, with Melissande...

But I don't want her to! Why does everything have to be so b.l.o.o.d.y difficult?

"Right," said Reg, gliding out of the gloom. "I've got him spotted." She landed on his shoulder again. "He's outside an old boot factory, five hundred yards down on the left. Looks like that Rottlezinder's up on the top floor. You can just see a crack of light shining between the closed shutters. We'd better get hopping, sunshine, we don't want to miss what's going on."

Letting his staff drop, Gerald plucked her off his shoulder and kissed her beak. "There's no we, Reg. Not this time. You've been marvellous but now you have to go."

"Gerald-"

"No. You can't be here, Reg. Please."

She rattled her tail feathers. "If there was time I'd argue with you, but there's not. Gerald, that place is hexed into the middle of next week. It was like flying into a brick wall, just about knocked me eyeb.a.l.l.s over toenails. I'd say that's why Errol's waiting on the footpath-so his nasty little friend can let him in. You'd better not try taking that fancy staff of yours anywhere near it-you'll probably start fireworks."

He kissed her again. "I won't. Goodbye!"

As she flapped away he slid his gold-filigreed staff into the undergrowth on the vacant lot and obscured it with a hex. Then, because Errol was so close, he reactivated his shield-incant and broke into a soft-footed jog down the empty street towards Errol, and Haf Rottlezinder.

The warding hexes Rottlezinder had put on the boot factory struck him while he was still some fifty feet from its partially boarded-up entrance. The criminal wizard's thaumic signature stank of power, and malice. Dropping back to a stealthy walk he slunk from shadow to shadow, inching his way closer... and closer...

Yes, there was Errol, still standing on the footpath, impatiently waiting. A single working lamppost a little further down the street washed him with a faint light. He looked ill. Angry. Uncertain.

Then Gerald felt the ether shiver. Saw a ripple in the air, gentle at first and then more forceful. Errol's hair ruffled, as though blown by a breeze, and detritus in the shallow gutter-some old leaves, a few sheets of torn, tattered newspaper-picked itself up and danced, coquettish. Hazing smoke from the looming factories eddied, sharpening the ambient stink.

Rottlezinder was opening the front door.

Gerald bit his lip. He needed access to his full range of potentia now. Trying to spy on Errol and Rottlezinder m.u.f.fled by his shield would be a waste of time... and dangerous. So he held his breath, and at the height of the warding hexes' deactivation switched his shield off. Trusting, hoping, that any disturbance it caused would be lost in the already agitated ether, he stood still and mute in the deepest shadow he could find, and waited.

It worked.

With the oddest sensation-like the soundless snapping of a taut elastic-the warding hexes around Rottlezinder's hideout collapsed. Gasping, Errol rocked a little on his heels. A moment later the partially-boarded factory entrance shifted sideways, and an indistinct figure stepped onto the broken-bricked path to the door.

"Haythwaite," it said, the accent heavily West Uphantican, guttural and grating.

"Haf," said Errol curtly. "It's safe to approach?"

"The hexes, they are down," said Rottlezinder. He sounded bleakly amused. "If it is safe, that is up to you. You're alone?"

Errol nodded. "Of course. I don't want trouble."

"Mmm-hmm," said Rottlezinder. "Such a funny fellow. You think I have not heard that before?"

Mist clouded as Errol breathed out, hard. "Not from me, you haven't. Can we go inside? I don't care to discuss this in the street, like some beggar."

"But you are a beggar, Errol," said Rottlezinder, amused. "You asked to see me, remember?"

Gerald saw Errol's lips pinch bloodless. Saw his hands clench into fists. No, no, no, Errol, don't you b.l.o.o.d.y dare! How am I supposed to get to the bottom of this if you kill each other before I've got you dead to rights!

"Yes, I asked to see you," said Errol, mastering himself. "But you approached me first. You got me involved. Please, Haf. We need to talk."

Frowning, Rottlezinder looked past Errol to the street beyond. "No, you want to talk. There is a difference."

"What are you looking for?" said Errol, turning. "I told you, Haf, I came alone."

"You saw no-one else in the street?"

"Not a soul," said Errol. "Why? Are you expecting more visitors?"

Rottlezinder's face stilled, then he shook his head. "No. I'm not one for company, Errol. You know that."

Gerald, watching, thought that was a lie. I'll bet he's waiting for Eudora Telford. But why? This is getting more complicated by the minute. Lord, how much do I hate complications?

"Yes," said Errol. "And this won't take long. Please, can we go inside?"

The suggestion of a careless shrug. "Sure," said Rottlezinder. "In you come."

Errol walked up the uneven brick path, treading carefully, his head tipped back a little as though braced for a blow. Rottlezinder didn't shift aside when Errol reached him. Instead he made Errol squeeze past him. Errol stepped off the broken brick path and into a slimy puddle of something. The gluggy splash, and his exclamation of disgust, made Rottlezinder laugh again.

"Haf," said Errol, his voice low. "There's no need for this to be unpleasant."

"No?" said Rottlezinder, then pulled aside the entrance's boarding. "You first, old friend."

As Errol shoved his way into the abandoned factory, Rottlezinder wandered a little way down the path and frowned out into the night. With the very edge of the street lamp's murky light touching him, Gerald saw that he was of middling height, very broad and blocky. Built more like a brawler than a wizard, one might think. His face was bony, his pale hair clipped very close to his skull, and he was dressed in black from head to toe. Around his right wrist a gold bracelet set with rubies winked and leered.

Gerald felt a tremble on the edges of the ether. Felt Rottlezinder's potentia gather itself, like a fist. The criminal wizard was going to reactivate his warding hexes, and once they were brought back to life there'd be no hope of getting into that factory, no hope of learning the truth about him and Errol, no chance of thwarting whatever wickedness they had planned next.

No, no, no... I can't be locked out, I can't. Come on, Dunnywood, you t.o.s.s.e.r. Think...

Time spiralled around him. Years ago... he was a small boy playing in the kitchen while his mother baked fresh scones. A knock on the door. Someone unexpected. Mother went to answer it-some kind of travelling salesman. He remembered standing behind her, his four-year-old head not quite level with her hips, clutching her green skirt, listening to her tell him, "No thank you, not today." Remembered her closing the door, and the toe of the salesman's shoe jamming it open. Remembered his voice, persistent and argumentative. She'd threatened him with her rolling pin and he'd run away, the nasty man.

Jamming his toe in the closing door...

Was it even possible? Was there an equivalent incant? If there was he'd never come across it. He'd have to improvise one, and quick.

Oh lord. Where's Monk when I need him?

As Haf Rottlezinder rewove the strands of his guarding hexes, Gerald took a deep, desperate breath and insinuated the barest sliver of his potentia into the turbulence of the thaumic mix. Not even so much as a toe in the door... more like a toenail... or a tiny toenail clipping... If Rottlezinder felt it, if he noticed any shift in the etheretic balance, this would get very ugly, very fast. And his best weapon, his First Grade staff, was yards and yards behind him in a patch of weeds.

"Hey!" said Errol from the abandoned factory's entrance. "What the h.e.l.l are you playing at, Haf? Do you think I came all this way to stand around watching you show off?"

Distracted, displeased, Rottlezinder swung round. And as he swung round he snapped the fingers of his right hand. Dull ruby fire flashed, the bracelet round his wrist shivering, and the warding hexes slammed back into place.

"You should watch your mouth, Errol," said Rottlezinder, not amused now but threatening. "A fight with me is not something you should be looking for."

"All right," said Errol. He sounded... cautious. And beneath the caution was something else. Fear. "I don't want to fight, Haf. I came to talk. So let's talk."

The factory's partially boarded-up door clattered shut behind them. Gerald let out his held breath, light-headed, and bent over, gasping, hands braced on his knees. Too close. That was too close. Rivulets of sweat trickled down his spine and face.

I read all those case files. I studied the last ten years of the Department's doings. Even with the censored bits blacked out, and n.o.body wanting Sir Alec to think they thought they were writing adventure fiction, I could see what this life is. So why am I surprised I'm so scared I could vomit?

Looked like Reg was right after all. Living is believing, sunshine, she was fond of saying. Until you've lived it you don't know what's possible.

Carefully he straightened, willing the dry-mouthed heaves to subside. Then he reached out and tugged, so very gently, on the thin thread of his potentia that was caught up in Haf Rottlezinder's warding hexes. Had he been right? Had his desperate gamble paid off? Or was he about to trigger the hexes and bring this entire investigation crashing down around his inexperienced ears?

He nearly fell over.

Oh, lord. Oh, Reg. It worked. How could it work? I don't know what I'm doing. I'm making this up as I go along.

Incredibly, what he'd managed to achieve, it seemed, was the insertion of his potentia into the actual matrix of Rottlezinder's warding hexes. It was still his, but somehow it was mimicking Rottlezinder's thaumic signature. The most fortuitous fluke, surely: this could only have worked because he stuck his toe in the door at a precisely perfect split-second of the hexing process.

If I'd tried to do it on purpose I'd never have managed it. Gosh. When Monk hears about this he's going to go spare.

But while it was exciting, he wasn't sure what it meant. Could he now break Rottlezinder's wardings? Or could he-maybe-possibly- He walked through them as though the hexes weren't there. As though he were Haf Rottlezinder himself.