But Call couldn’t say any of that, so he said nothing at all. Aaron was looking out over the waves at the setting sun. All summer, having Aaron at the house had felt like having a brother, someone to joke around with, someone who was always there to watch movies or destroy robots. As the drive to the Collegium had gone on, though, Aaron had become quieter. By the time Alastair had parked his silver 1937 Rolls-Royce Phantom near the boardwalk and they had passed a giant weird statue of Poseidon, Aaron had pretty much stopped talking entirely.

“You okay?” Call asked as they walked on.

Aaron shrugged. “I don’t know. It’s just that I was prepared to be the Makar. I knew it was dangerous and I was scared, but I understood what I had to do. And when people gave me stuff, I understood why. I understood what I owed them in return. But now I don’t know what it means to be a Makar. I mean, if there’s no war against the Enemy, that’s great, but then what do I —”

“We’re here,” Alastair said, coming to a stop. Waves crashed on the black rocks around them, kicking up salty spray and frothing in little tide pools. Call felt the light rain of it, like a cool breath across his face.

He wanted to say something to reassure Aaron, but Aaron wasn’t looking at him anymore. He was frowning at a scuttling crab. It crossed a braid of seaweed, tangled with a piece of old rope, the threadbare ends floating in the water like someone’s unbound hair.

“Is this safe?” Call asked instead.

“As safe as anything connected with the mages,” Alastair said, tapping his foot on the ground in a quick, repetitive rhythm. For a moment, nothing happened — then there was a grating sound and a square of rock slid aside to reveal a long spiraling staircase. It wound down and down, like the one in the library of the Magisterium, except there weren’t rows of books here, only the curving staircase and, at the very bottom, a glimpse of a square of marble floor.

Call swallowed hard. It would have been a long walk for anyone, but for him, it seemed impossible. His leg would be cramping by the time they got halfway down. If he stumbled, it would be a very scary fall.

“Um,” said Call, “I don’t think I can …”

“Levitate yourself,” Aaron said quietly.

“What?”

“Levitation is air magic. We’re surrounded by rock — dirt and stone. Push down on it and it’ll lift you. You don’t have to fly, just float a few inches off the ground.”

Call glanced toward Alastair. Even now, he was a little wary of doing magic around his father, after all the years Alastair had spent telling him that magic was evil, that mages were evil and wanted to kill him. But Alastair, glancing down at the long stairway, just nodded curtly.

“I’ll go down first,” Aaron said. “If you fall, I’ll catch you.”

“At least we’ll go down together.” Call started to back down the stairs, putting one foot carefully in front of the other. Call could hear the noise of voices and clinking silverware far below. He took a deep breath and reached out to touch the force of the earth — to reach into it and draw it into himself, then push off, as if he were pushing off from the side of a swimming pool into the water.

He felt the drag on his muscles and then a lightness as his body rose into the air. As Aaron had instructed, he didn’t try to lift himself more than a few inches. With just enough space to clear the steps, he drifted downward. Though he wanted to tell Aaron he wasn’t going to fall, it was kind of nice knowing that if he did, someone was poised to catch him.

Alastair’s steady footsteps were also reassuring. Carefully, they made their way down, Alastair and Aaron walking, Call hovering just above the stairs. A few steps from the bottom, he let himself drift gently down. He hit the stairs and stumbled.

It was Alastair who reached out to grab his shoulder. “Steady on,” he said.

“I’m fine,” Call said gruffly, and limped quickly down the last few steps. His muscles ached a little, but nothing like the pain he would have been in if he’d walked. Aaron was already on the ground and gave him a big grin.

“Check it out,” he said. “The Collegium.”

“Whoa.” Call had never seen anything like it. The spaces of the Magisterium were often magnificent, and some were enormous, but they were always clearly underground caverns carved from natural rock. This was different.

A huge hall opened in front of them. The walls, the floor, and the columns that held up the roof were all gold-flecked white marble. A tapestry map of the Collegium decorated one wall. There was a huge dais that ran along one side of the room, and multicolored banners hung behind it. Sayings from the works of Paracelsus and other famous alchemists were printed across them in gold. All is interrelated, said one. Fire and earth, air and water. All are but one thing, not four, not two, and not three, but one. Where they are not together is only an incomplete piece.

A huge chandelier hung from the ceiling. Fat crystals dangled from it like teardrops, scattering light in all directions over the large crowd of people — members of the Assembly in golden robes, Masters of the Magisterium in black, and everyone else in elegant suits and dresses.

“Fancy,” said Alastair, grimly. “Too fancy.”

“Yeah,” said Call. “The Magisterium is a real dump. I had no idea.”

“There aren’t any windows,” Aaron said, looking around. “Why aren’t there windows?”

“Probably because we’re underwater,” Call answered. “Wouldn’t the pressure break the glass?”

Before they could continue their speculation, Master North, head of the Magisterium, came toward them out of the crowd. “Alastair. Aaron. Call. You’re late.”

“Underwater traffic,” said Call.

Aaron elbowed him.

Master North gave him a stern look. “Anyway, you’re here. The others are waiting with the Assembly.”

“Master North,” said Alastair with a curt nod. “My apologies for our lateness, but we are the honorees. You could hardly start without us, could you?”

Master North gave a thin smile. Both he and Alastair appeared as though they might become quickly exhausted by the strain of being civil. “Come with me.”

Aaron and Call shared a look before following the adults through the room. As the crowd grew more tightly packed, people started to press in at them, staring at Aaron — and at Call, too. One middle-aged man with a paunch caught Call’s arm.