She spooled the thread of power back into herself, into that well, and was suddenly cold.

   “Please tell me you brought food,” Luca said again.

   “Is that why you came? Rowan promised you snacks?”

   “I’m a growing boy.” He winced when he looked at Rowan. “And you don’t say no to him.”

   No, indeed, no one ever said no to him, and that was probably why Rowan thought a scheme like this was acceptable. Celaena sighed through her nose and looked at the small hole she’d made. A feat—­a miracle. As she was about to stand and help Luca navigate the way back to shore, she glanced at the ice once more. No, not the ice—­the water beneath.

   Where a giant red eye was staring right at her.

   35

   The next four words that came out of Celaena’s mouth ­were so vulgar that Luca choked. But Celaena didn’t move as a massive, jagged, white line gleamed unnervingly far from that red eye.

   “Get off the ice now,” she breathed to Luca.

   Because that jagged white line—­those ­were teeth. Big, rip-­your-­arm-­off-­in-­one-­bite teeth. And they ­were floating up from the depths, toward the hole she’d made. That was why there ­were no skeletons—­only the weapons that had failed the fools who’d wandered into this cave.

   “Holy gods,” Luca said, peering from behind her. “What is that?”

   “Shut up and go,” she hissed. On the shore, Rowan’s eyes ­were wide, his face strained beneath his tattoo. He hadn’t realized this lake ­wasn’t empty.

   “Now, Luca,” Rowan growled, his sword out, the blade he’d swiped from the ground still sheathed in his other hand.

   It was swimming toward them, lazily. Curious. As it neared, she could make out a snaking body as pale as the stones on the bottom of the lake. She’d never seen anything so huge, so ancient, and—­and there was only a thin layer of ice keeping her separated from it.

   When Luca started trembling, his tan skin going pale, Celaena surged to her feet, the ice groaning. “Don’t look down,” she said, gripping his elbow. A patch of thicker ice hardened under their feet and spread—­a path for the shore. “Go,” she told the boy, giving him a light shove. He started into a swift shuffle-­slide. She let him get ahead, giving him time so she could guard his back, and glanced down again.

   She swallowed her shout as a scaled, massive head stared up at her. Not a dragon or a wyvern, not a serpent or a fish, but something in between. It was missing an eye, the flesh scarred around the empty socket. What in hell had done that? Was there something worse down there, swimming at the belly of the mountain? Of course—­of course she’d be left unarmed in the center of a lake lined with weapons.

   “Faster,” Rowan barked. Luca was already halfway to the shore.

   Celaena broke into Luca’s same shuffle-­slide, not trusting herself to stay upright if she ran. Just as she took her third step, a flash of bone-­white snapped up through the depths, twisting like a striking asp.

   The long tail whipped against the ice and the world bounced.

   She went up, legs buckling as the ice lifted from the blow, and then slammed onto her hands and knees. Celaena shoved down the magic that arose to protect and burn and maim. She scrambled and veered aside as the scaly, horned head hurtled toward the ice near her feet.

   The surface jolted. Farther out, but getting closer, the ice was breaking. As if all of Rowan’s concentration was now spent on keeping a thin bridge of ice frozen between her and the shore. “Weapon,” she gasped out, not daring to take her attention off the creature.

   “Hurry,” Rowan barked, and Celaena lifted her head long enough to see him slide the blade he’d found across the ice, a brisk wind spinning it toward her. Luca abandoned the blanket, shuffle-­running, and Celaena scooped up the golden-­hilted sword as she followed him. A ruby the size of a chicken egg was embedded in the hilt, and despite the age of the scabbard, the blade shone when she whipped it free, as if it had been freshly polished. Something clattered from the scabbard onto the ice—­a plain golden ring. She grabbed it, shoving it into her pocket, and ran faster, as—

   The ice lifted again, the boom of that mighty tail as horrific as the moving surface beneath her. Celaena stayed up this time, sinking onto her haunches as she clutched the sword, part of her marveling at the balance and beauty if it; but Luca, slipping and sliding, went down. She reached him in a few heartbeats, hauling him up by the back of his tunic and gripping him tight as the ice lifted again and again and again.

   They got past the drop-­off, and she almost groaned with relief at the sight of the pale stone shelf beneath their feet. The ice behind them exploded up, freezing water showering them, and then—

   She didn’t stop as those nostrils huffed. Didn’t stop hauling Luca toward Rowan, whose brow gleamed with sweat as massive talons scraped over the ice, gouging four deep lines.

   She dragged the boy the last ten yards, then five, then they ­were on the shore and to Rowan, who let out a shuddering breath. Celaena turned in time to see something out of a nightmare trying to crawl onto the ice, its one red eye wild with hunger, its massive teeth promising a brutal and cold kind of death. As Rowan’s sigh finished sounding, the ice melted, and the creature plunged below.

   Back on solid ground, suddenly aware that the ice had also been a barrier, Celaena again grabbed Luca, who was looking ready to vomit, and bolted from the cave. There was nothing keeping that creature from climbing out of the water, and the sword was about as useful as a toothpick against it. Who knew how fast it could move on land?

   Luca was chanting a steady stream of prayers to various gods as Celaena yanked him down the rocky path and into the glaring afternoon sun, stumbling near-­blind until they hit the murky woods, dodging trees mostly by luck, faster and faster downhill, and then—

   A roar that shook the stones and sent the birds scattering into the air, the leaves rustling. But a roar of rage and hunger—­not of triumph. As if the creature had reached the edge of the cave and, after millennia in the watery dark, could not withstand the sunshine. She didn’t want to consider, as they kept running from the echoing roar, what might have happened if it had been night. What still might happen at nightfall.

   After a while, she sensed Rowan behind them. Yet she cared only for her young charge, who panted and cursed all the way back to the fortress.

   •

   When Mistward was in sight, she told Luca only one thing before she sent him ahead: keep his mouth shut about what had happened in the cave. The moment the sounds of him crashing through the brush had faded, she turned.

   Rowan was standing there, panting as well, his sword now sheathed. She plunged her new blade into the earth, the ruby in the hilt glowing in a patch of sunlight.