Isaac wanted to taunt Vermishank with this, to wave the knowledge of his weakness at him, to punish him for all his crimes . . . but he would not risk it. If Isaac were to antagonize him too flagrantly, to confront him with an understanding of his fear that Isaac doubted Vermishank himself possessed, then the vile man might withdraw all his help out of spite.

If he needed to think he was crowing to beg for help, then Isaac would let him.

“What is dreamshit?” said Isaac.

“Dreamshit?” Vermishank smiled, and Isaac remembered the last time he had asked Vermishank that question and the man had affected disgust, had refused to sully his mouth with the foul word.

It came easy to him now.

“Hah. Dreamshit is baby food. It is what the moths feed their young. They exude it all the time, but in great quantities when they are parenting. They are not like other moths: they’re very caring. They nurture their eggs assiduously, by all accounts, and suckle the newborn caterpillars. Only in their adolescence, when they pupate, can they feed themselves.”

Derkhan interjected.

“Are you saying that dreamshit is slake-moth milk?”

“Exactly. The caterpillars cannot yet digest purely psychic food. It must be imbibed in quasi-physical form. The liquid the moths exude is thick with distilled dreams.”

“And that’s why some fucking druglord bought them? Who was it?” Derkhan’s mouth curled.

“I have no idea. I merely suggested the deal. Which of the bidders was successful is irrelevant to me. One has to husband the moths carefully, stud them regularly, milk them. Like cows. They can be manipulated—by someone who knows what they’re doing—fooled into exuding milk without having born grubs. And the milk has to be processed, of course. No human, or any other sentient race, could drink it neat. It would instantly explode their mind. The inelegantly named dreamshit has been rendered and . . . ah . . . cut with various substances . . . Which incidentally, Isaac, means that the caterpillar you raised—that I presume you fed on dreamshit—must have grown into a less than healthy moth. It is as if you fed a human baby milk laced with large quantities of sawdust and pondwater.”

“How do you know all this?” hissed Derkhan.

Vermishank looked at her blankly.

“How do you know how many mirrors it takes to make you safe, how do you know they turn the minds they . . . they eat into that . . . milk . . . ? How many people have you fed to them?”

Vermishank pursed his lips, a little perturbed.

“I am a scientist,” he said. “I use the means at my disposal. On occasion, criminals are sentenced to death. The manner of their death is not specified . . .”

“You swine . . .” she hissed viciously. “What about all the people the dealers take to feed them, to make the drug . . . ?” she continued, but Isaac cut her off.