“HAIL!” The cry was muted—the mice were making an effort—but loud enough that I glanced over my shoulder, waiting for a PA or stagehand to stick their head in and ask what I was shouting about. When no one appeared I relaxed, marginally, and turned back to the wardrobe rack.

The mice were starting to appear, lining themselves up neatly as they bristled their whiskers and waved their paws in the air, jubilant over my appearance. Only about half the colony was present; the rest must have been running around in the basements, looking for signs of Alice. They’d been making the most of their time in the theater: fully half of them had strings of beads or sequins wrapped around their necks, and one was clutching a bag made from an ankle sock, stuffed to its absolute limit with feathers.

“Have you been chewing on costumes?” I asked.

“No, Priestess,” said the mouse at the front of the group. “All we have Taken, we have Found, for did not the Well-Groomed Priestess say unto us, What Has Been Discarded, You May Have, But Don’t You Little Monsters Nip My Embroidery?”

“I’ll believe it,” I said. “I’ll try to find you a shoebox to put everything in. I can sneak it back to the apartment, no problem.”

The mice cheered again. Then they sobered, and the lead mouse said, “We have not found the Noisy Priestess. We have failed you.”

“Woe,” moaned the mice, in unnerving unison.

The last thing I needed to deal with was a crisis of faith on the part of my Aeslin mice. “You haven’t failed me,” I said hurriedly. “Anything worth doing is worth working for, right? We’re being challenged right now. That means we have to stick with it, and we’ll find her.” Whether or not we’d find her alive . . .

No. I couldn’t dwell on that, or on the fact that maintaining my cover meant I was dancing while my grandmother was missing and potentially dead somewhere underneath the theater. For the sake of the mice, I had to remain positive.

That was a lie, too. For the sake of my heart, I had to remain positive. If I let my positivity fade, I would lose my grip on Valerie: she would collapse like the house of cards she was, and I would have to face the fact that I didn’t belong here, I never really had, and everything was going wrong around me.

“You are Wise,” said the lead mouse solemnly. “We have searched three more of the chambers below the ground. Dark they are, and vile, and filled with scuttling creatures.”

“They were delicious,” piped another mouse.

“Assuming you mean the scuttling creatures, there; go on,” I said. “What did you find?”

“No sign that anyone had walked in those dark places for many days and nights, Priestess,” said the lead mouse, shooting a glare at the mouse that had dared to interject. The Aeslin enforced a fairly strict hierarchy among themselves. It was possible for a mouse who wasn’t part of the priesthood to go years without speaking directly to a family member. It had always seemed a little unfair to me, but since I wasn’t a part of the colony, I figured it wasn’t my place to say anything. “There was neither trace nor track of the Noisy Priestess.”

“Okay,” I said, despite the fact that this was anything but okay. “How many rooms do you have left to go?”

The mouse slicked back its whiskers, looking despondent. “Truly, we Do Not Know,” it said. “Each time we think we have reached the end, we find another door, another chamber. Two of the rooms we have searched so far were not present on the Helpful Map.”

“Which means you’re starting to find the hidebehind areas, which were never on the map to begin with,” I said. “Great. Do you need me to do any annotating?”

“Please,” said the mouse, with all the solemnity of someone who had just had a great and unexpected favor bestowed upon them.

I fished the map out from behind the wardrobe rack and spent five minutes making notes to match the things the mice told me. Here was a door, here was a staircase with two treads missing, here was a good place to hunt centipedes. Dominic’s handwriting was large and spidery and reassuring. Mine was tight and compact, filling in the space between his notes.

When I was done, I handed the pencil back to the lead mouse, said, “Come find me if you find any trace of her,” and left to the sound of muted rodent cheering, fleeing back to the rehearsal room, where Marisol was just starting to get impatient waiting for me.

Thank God for the Argentine tango. Any other dance form and I would have been falling on my ass. As it was, Marisol kept snapping corrections to my form and ordering me to get my face under control. After the third time I’d mechanically performed the same piece of footwork, she clapped her hands and shouted, “Stop!”