“The Darklands?” I interrupted, and Gert looked surprised. I realized that the first time I’d used my magic to find my way into that spooky, desolate parallel universe was after Gert died—or didn’t die. Whatever. Gert didn’t know I knew about the Darklands.

“She can get there, too,” Mombi explained curtly. Gert nodded.

“Your magic has grown considerably since last I saw you, Amy,” Gert said. “Anyway, no—I wasn’t in the Darklands, I don’t think. There’s a lot we don’t know about that place. As far as I know I was here, in this clearing, the whole time.”

It took me a second to realize she meant Dusty Acres. “You were in the trailer park?” I asked.

Gert looked confused. “I don’t know what that is,” she said. “But I couldn’t leave this area, no. I’d start out in one direction and somehow, without even realizing it, I’d be exactly back where I began, no matter how far I walked. I couldn’t touch anything—no matter how far I stretched, everything was just out of reach. I didn’t see any other people—not so much as a bird or a beetle.” She looked sad and incredibly old. “It was awful,” she said gruffly. “It took me a long time to regain any strength, and I’m still much weaker than I was before. But eventually, my magic was strong enough for me to get a message to Mombi and Glamora. They used the breakdown between the worlds to join me here. We had some idea the Wizard would try to use you to open a portal back to Kansas, and we knew the doorway would be in this place, so we came here to wait for you.”

“You knew the Wizard wanted to kill me—to use me to open a portal back to Kansas—and you didn’t stop him?” I asked angrily.

“Gert was next to useless,” Mombi said bluntly. “I’m pretty weak myself. The three of us weren’t strong enough to stop the Wizard outright. But we knew if Nox joined us and completed the circle, we’d be powerful enough to defeat him and Dorothy.”

“Wait, back up,” I said. “What circle? Does this have to do with what happened out there?” And if they were powerful enough to defeat the Wizard and Dorothy with Nox helping them, why had they ever needed me in the first place?

“You already know about the balance of power in Oz,” Gert said, and I remembered her uncanny trick of reading minds. “Oz depends on magic to survive, and no one person can tap too heavily into it without harming Oz. That balance is part of what the Order was trying to maintain. There have always been four witches—one each in the North, the South, the East, and the West. But that balance has been out of whack since Dorothy’s first visit to Oz, and it’s even more out of line now. When Dorothy’s house killed the Wicked Witch of the East, she opened up a vacuum that no one was strong enough to fill.”

“I still don’t understand,” I said.

“We’ve been trying to defeat Dorothy by fighting one battle at a time, but that’s like trying to put out a forest fire by hauling water in a bucket,” Mombi said. “The Order has been scattered across Oz. Half the soldiers you trained with back in the caverns are dead. Others . . .” She shrugged. “We know where some of them are, but we’re too spread out to do any good anymore. What we did out there”—she waved vaguely at the ruins of the place where I’d lived since my mom slid into her downward spiral of addiction—“was make Nox into one of us. The Wicked Witch of the East, essentially.”

“By restoring the Quadrant, we’re finally strong enough to kill Dorothy,” Glamora said. “We had all our hopes pinned on you—”

“But I can’t kill Dorothy,” I said slowly. “Because we’re linked somehow. So you have to do it yourselves.”

Mombi nodded.

“Not to mention the fact that Dorothy just teleported herself back to Oz and we’re stuck here.”

Mombi nodded again.

I sighed and put my head in my hands. I was getting really sick of witches. “If you knew all along that you could make Nox into one of you, why didn’t you do it sooner? Why didn’t you tell me?”

“Because once Nox is bound to the Quadrant, he’s in for life,” Gert said. “There’s no hope for him to ever be anything else. We didn’t tell you—he didn’t tell you—because we hoped it would never come to this. We’re older than you can imagine, Amy, and for us the sacrifice is—well, it’s done. There’s no going back for any of us. But this is a terrible fate to wish on someone as young as Nox.” <