When a rugged mountain man traded his entire winter's haul to save an eight-year-old orphan, he didn't expect a thank you, let alone a promise."I'll pay you back when I grow up," she told him.He laughed it off. In the merciless West, people didn't survive long enough to keep promises. But 15 years later, she came back to collect.The winter of 1872 did not arrive. It assaulted.It swept down from the jagged peaks of the Bitterroot Range with a violence that froze birds mid-flight and snapped ancient pines like dry kindling. Gideon Hayes was 24, but the mountains had already carved ten extra years into his face. He was a man made of rawhide and quiet habits, living off the trap lines he maintained along the high ridges. He didn't like towns. He didn't like people. People talked too much and usually brought trouble.But when he saw the broken wheel of a Conestoga wagon half-buried in a snowdrift off the valley trail, he didn't turn his horse around. The code of the high country didn't allow you to ignore a broken wagon in a blizzard.He found the oxen first, frozen solid, covered in a rime of white frost. Then he found the parents—a man and a woman huddled together against the leeward side of the wagon box. The snow had already claimed them, burying them in a pristine, terrible white blanket.Gideon dismounted, the snow crunching like broken glass under his boots. He pulled his rifle from its scabbard, scanning the tree line for wolves.That was when he heard the breathing.It was shallow—a ragged, wet rattle coming from inside the canvas. Gideon climbed up the iced-over wheel and ripped the canvas back. Beneath a pile of stiff, frozen trade blankets and a heavy buffalo robe, a girl stared up at him. She was maybe eight years old. Her lips were blue, and her skin was the color of old parchment.She wasn't crying. She had run out of tears, or the cold had frozen them inside her. She just looked at him with wide, dark eyes that had seen the end of the world."Well, hell," Gideon muttered, his breath pluming in the freezing air.He didn't waste time asking questions. He wrapped her in the buffalo robe, tied her securely to his chest with a length of hemp rope, and mounted his horse.The ride back to his cabin was a brutal, blinding slog. The wind screamed through the canyons, biting at his exposed skin. He felt the child shivering against his ribs—violent, uncontrollable tremors. He pushed the horse harder, praying the animal's heart wouldn't give out.When they reached his cabin, he built a fire that roared up the stone chimney. He heated stones in the hearth, wrapped them in cloth, and packed them around her under the heavy quilts of his bed. He brewed willow bark tea and forced it past her chattering teeth.