The sun hung low over the spires of Shahryar’s capital, gilding the domes of his palace in molten gold. Pigeons wheeled above courtyards where fountains wept silver into marble basins, their waters laced with rose oil and the musk of ambition. It was here, in a chamber lined with lapis lazuli and tapestries spun from Tyrian purple, that the elder king sealed his summons to Shah Zamán, his younger brother. The parchment bore his seal—a lion devouring the moon—and words that dripped like syrup over the blade of a dagger:

“Come, brother, and let our hearts drink of each other’s company. Let the miles between us wither. For what is a kingdom without the solace of shared blood?”

Shahryar’s envoy departed at dawn, laden with proofs of his affection: ten stallions caparisoned in gold, their bridles chiming with sapphires; twenty slave boys, their skin polished ivory, limbs coiled with the taut grace of panthers; and seven concubines, bare-breasted and oiled, their nipples rouged, their loins girdled in silk so sheer it clung like a second skin. The eldest among them carried a casket of sandalwood, within which lay a dagger—its helt a serpent of emerald, its blade etched with verses from the qasidas of longing. A gift, Shahryar mused, for the brother who ruled the frost-bitten steppes of Samarcand. A reminder: Even in absence, I see you.

Shah Zamán received the envoy in his own hall, a vaulted space hung with wolf pelts and shields still dented from the teeth of invaders. He read the missive once, then again, his thumb tracing the lion-and-moon seal as if it might bleed. The concubines knelt before him, their perfume clashing with the smoke of pine tar and iron. One—a redhead with eyes like split jade—reached to unfasten her girdle. He stopped her with a glance.

“Tell my brother I come,” he said to the envoy. His voice was gravel wrapped in velvet.

The journey took fourteen nights. Shah Zamán rode ahead of his retinue, his cloak snapping like a black wing in the wind. By day, the plains stretched barren, save for the bones of caravans picked clean by vultures. By night, the stars pressed close, cold and mocking. He dreamt of Shahryar as a boy: tousle-haired, grinning, offering him figs stolen from their father’s orchards.

“Eat, little brother. The sweetness is better shared.”

On the fifteenth morning, the walls of Shahryar’s capital rose like a mirage. Shah Zamán’s throat tightened. He had forgotten the scent of jasmine in bloom.

It was the dagger that undid him.

Three hours after they had left the gates of Samarcand, Shah Zamán reined his horse to a halt. “The gift,” he muttered. “I left it in the vault.” His captain frowned—a detour now would cost daylight—but the king was already turning his stallion’s head.

He entered his palace through the western gate, where the guards knew better than to challenge him. The vault lay beneath the armory, its door sheathed in iron. Inside, among chests of uncut rubies and maps of conquered lands, he found the sandalwood casket. He lifted the dagger, its emerald serpent glinting in the torchlight. A faint sound hissed through the silence—a moan, high and keening, like a hare in a snare.

His heart clenched. He knew its timbre, the ululation as sinuous to the ear as the flesh of it's owner under his hand. Snarling, he followed it.

The royal bedchamber stank of myrrh and sweat. Shah Zamán’s queen lay supine on the silk-drowned bed, her legs hooked over the shoulders of a man whose skin was the blue-black of a storm sky at midnight. The cook—for that is what he was, his fingers still reeking of garlic and cumin—plunged into her with the rhythm of a galley slave. Her nails raked his back, drawing welts as she chanted, “Deeper, deeper, by the ninety-nine names of God—”

Shah Zamán did not roar. Did not weep. He crossed the room in three strides, his scimitar already unsheathed. The cook turned, his member glistening, his mouth an O of terror. The blade took him first: a diagonal slash from collarbone to hip, parting flesh as easily as a finger through water. The queen screamed, her thighs slick with his blood. She scrambled backward, but the king’s second stroke split her from crown to pelvis, her body falling in two meaty halves.

The silence afterward was thick, broken only by the drip of viscera onto the tiles. Shah Zamán stared at his hands. The dagger—Shahryar’s dagger—lay on the floor, its serpent grinning.

The elder king greeted his brother in the Hall of a Thousand Mirrors, its walls alive with reflections of their reunion. Shahryar’s embrace was firm, his beard fragrant with amber. “Brother,” he murmured. “Your face is the balm of my soul.”

Shah Zamán’s smile was a rictus. His skin had yellowed, his eyes sunken into bruised hollows. When Shahryar pressed a goblet of pomegranate wine into his hand, the younger king’s fingers trembled, spilling droplets like blood onto the ivory table.

“You are unwell,” Shahryar said, his voice a blade wrapped in silk.

“The road,” Shah Zamán rasped. “The dust… it bites like a serpent.”

Shahryar’s gaze lingered, sharp as a falcon’s. That night, a feast was held: peacocks stuffed with pistachios, dates swollen with honey, wine so dark it mirrored the vault of heaven. Shah Zamán ate nothing. He watched the dancers—lithe boys and girls twining like serpents—and saw only the cook’s corpse, the queen’s entrails steaming in the cold air.

Days passed. Physicians came with leeches and tinctures, their brows furrowed as Shah Zamán’s flesh sagged from his bones. Shahryar ordered the royal gardens scoured for rare herbs, the air perfumed with frankincense to “purge the miasma.”

Yet the brothers’ conversations were graveside shallow.

“You must hunt with me tomorrow,” Shahryar urged one evening, his fingers drumming the hilt of the emerald dagger. “The chase will flush the sickness from your veins.”

Shah Zamán’s laugh was a dry leaf crushed underfoot. “What need have I of stags, brother? I have seen the beast within.”

A pause. Somewhere, a lute string snapped.

Shahryar leaned close, his breath warm with wine. “Speak plainly. What venom gnaws at you?”

But Shah Zamán turned his face to the moonlit gardens, where the shadows seemed to writhe like lovers. “Nothing,” he lied. “Nothing at all.”