As it turned out the device followed all by itself: the stand on which it rested clambered nimbly through the window on its six jointed legs, like a giant ant with one staring white clock eye. The thick white carpet swallowed their footsteps.

Quentin peered out into the hall, left then right, feeling like a kid sneaking out at a sleepover. The bird was right: no one there. The walls were bare of pictures; the house looked like the anonymous luxury vacation rental that it probably was. For just a minute Quentin allowed himself to think about what he would do if this actually worked. He’d buy a house. He’d study niffins. Could he summon Alice? Bind her? Was she a demon now? He would break back into Brakebills if he had to; maybe Hamish would let him in. He’d go back to Mayakovsky if he had to.

He turned left at the corner and immediately the corridor was revolving around him like a tunnel in a funhouse. He flopped over and hit the carpet hard. He gripped it, tried to wind his fingers into it, feeling gravity shift around him. Christ—what did he expect, invading a magician’s house? He looked back over his shoulder, but he was alone, everyone else was gone, and the spinning corridor stretched out to infinity.

And then it didn’t. The others were standing there watching him with expressions of mild concern as he lay flat on the floor, desperately groping for a handhold, and Plum waved away the last shreds of the illusion.

“Get up,” Lionel said.

“Trap,” Plum said. “You’re fine.”

He got to his feet cautiously. His heart rate was already easing off. She was right. He was fine.

Left again, and there was the door on the right. Quentin couldn’t find a whisper of magic on it, but Betsy pushed past him and began taking a series of traps offline—weird, unpleasant psychic snares. He heard the muffled boom of faraway thunder: a storm, it must have blown in fast. He looked back at the others, strung out behind him down the hall. Pushkar and Lionel had rolled up the carpet and were lugging it with them on their shoulders.

When Betsy was done he pushed open the door. It wasn’t even locked.

It was a pool room, long and well appointed, with a row of windows along one wall and couches along the other. The overall impression was of slightly artificial clubby gentility. Brown leather armchairs occupied the corners, and there was a cavernous fieldstone fireplace at one end that showed no sign of ever having been used. Boxes and crates of all possible sizes and shapes lay strewn around, which ruined the genteel atmosphere, along with some items too big or too unwieldy to be boxed or crated: a stuffed deer, a penny-farthing bicycle, an old-timey jukebox, a double bass made of dark wood.