“It’s not meant to stand out,” said Melina. “You aren’t supposed to notice it at all.”

“They’re doing a poor job of keeping it hidden, then,” said Enoch.

“As I said, it’s not usually covered in ice.”

“What do you think happened here?” I asked.

“Nothing good,” said Millard. “Nothing good at all.”

There was no question we’d have to get closer and explore, but that didn’t mean we had to rush in like fools. We hung back and watched from a distance. People came and went. Someone tried the door but it was frozen shut. The crowd thinned a bit.

“Tick, tick, tick,” said Enoch. “We’re wasting time.”

We cut through what was left of the crowd and stepped onto the icy sidewalk. The building emanated cold, and we shivered and jammed our hands into our pockets against it. Bronwyn used her strength to pull open the door, and it came straight off, hinges flying—but the hallway it let onto was completely obstructed by ice. It stretched from wall to wall, floor to ceiling, and into the building in a blue and cloudy blur. The same was true of the windows: I wiped the frost from one pane and then another, and through both I could see only ice. It was as if a glacier was being born somewhere in the heart of the place, and its frozen tongues were squeezing out wherever there was an opening.

We tried every way we could think of to get inside. We rounded the building looking for a door or window that wasn’t blocked, but every potential entrance was filled with ice. We picked up stones and loose bricks and tried hacking at the ice, but it was almost super-naturally hard—even Bronwyn could dig no more than a few inches into it. Millard scanned the Tales for any mention of the building, but there was nothing, no secrets to be found.

Finally, we decided to take a calculated risk. We formed a semicircle around Emma to block her from view, and she heated her hands and placed them against the ice wall that filled the hallway. After a minute they began to sink into the ice, meltwater trickling down to puddle around our feet. But the progress was painfully slow, and after five minutes she’d only gotten up to her elbows.

“At this rate, it’ll take the rest of the week just to get down the hall,” she said, pulling her arms from the ice.

“Do you think Miss Wren could really be inside?” said Bronwyn.

“She has to be,” Emma said firmly.

“I find this contagion of optimism positively flabbergasting,” said Enoch. “If Miss Wren is in there, then she’s frozen solid.”

Emma erupted at him. “Doom and gloom! Ruin and ruination! I think you’d be happy if the world came to an end tomorrow, just so you could say I told you so!”

Enoch blinked at her, surprised, then said very calmly, “You may choose to live in a world of fantasy if you like, my dear, but I am a realist.”

“If you ever offered more than simple criticism,” Emma said, “if you ever gave a single useful suggestion during a crisis, rather than just shrugging your shoulders at the prospect of failure and death, I might be able to tolerate your unrelenting black moods! But as it stands—”

“We’ve tried everything!” Enoch interjected. “What could I possibly suggest?”

“There’s one thing we haven’t tried,” Olive said, piping up from the edge of our group.

“And what’s that?” asked Emma.

Olive decided to show rather than tell us. Leaving the sidewalk, she went into the crowd, turned to face the building, and called at the top of her lungs, “Hello, Miss Wren! If you’re in there, please come out! We need your—”

Before she could finish, Bronwyn had tackled her, and the rest of Olive’s sentence was delivered into the big girl’s armpit. “Are you insane?” Bronwyn said, bringing Olive back to us under her arm.

“You’re going to get us all found out!”

She set Olive on the sidewalk and was about to chastise her further when tears began streaming down the little girl’s face. “What does it matter if we’re found out?” Olive said. “If we can’t find Miss Wren and we can’t save Miss Peregrine, what does it matter if the whole wight army descends on us right now?”

A lady stepped out of the crowd and approached us. She was older, back bent with age, her face partly obscured by the hood of a cloak. “Is she all right?” the lady asked.

“She’s fine, thank you,” Emma said dismissively.

“I’m not!” said Olive. “Nothing is right! All we ever wanted was to live in peace on our island, and then bad things came and hurt our headmistress. Now all we want to do is help her—and we can’t even do that!”

Olive hung her head and began to weep pitifully.

“Well then,” said the woman, “it’s an awfully good thing you came to see me.”

Olive looked up, sniffled, and said, “Why is that?”

And then the woman vanished.

Just like that.

She disappeared right out of her clothes, and her cloak, suddenly empty, collapsed onto the pavement with an airy whump. We were all too stunned to speak—until a small bird came hopping out from beneath the folds of the cloak.

I froze, not sure if I should try to catch it.

“Does anyone know what sort of bird that is?” asked Horace.

“I believe that’s a wren,” said Millard.

The bird flapped its wings, leapt into the air, and flew away, disappearing around the side of the building.

“Don’t lose her!” Emma shouted, and we all took off running after it, slipping and sliding on the ice, rounding the corner into the snow-choked alley that ran between the glaciated building and the one next to it.

The bird was gone.

“Drat!” Emma said. “Where’d she go?”

Then a series of odd sounds came up from the ground beneath our feet: metallic clanks, voices, and a noise like water flushing. We kicked the snow away to find a pair of wooden doors set into the bricks, like the entrance to a coal cellar.

The doors were unlatched. We pulled them open. Inside were steps that led down into the dark, covered in quick-melting ice, the meltwater draining loudly into an unseen gutter.

Emma crouched and called into the darkness. “Hello? Is anyone there?”

“If you’re coming,” returned a distant voice, “come quickly!”

Emma stood up, surprised. Then shouted: “Who are you?”

We waited for an answer. None came.