The Silmarillion

But Huan the hound was true of heart, and the love of Lúthien had fallen upon him in the first hour of their meeting; and he grieved at her captivity. Therefore he came often to her chamber; and at night he lay before her door, for he felt that evil had come to Nargothrond. Lúthien spoke often to Huan in her loneliness, telling of Beren, who was the friend of all birds and beasts that did not serve Morgoth; ad Huan understood all that was said. For he comprehended the speech of all things with voice; but it was permitted to him thrice only ere his death to speak with words.

Now Huan devised a plan for the aid of Lúthien; and coming at a time of night he brought her cloak, and for the first time he spoke, giving her counsel. Then he led her by secret ways out of Nargothrond, and they fled north together; and he humbled his pride and suffered her to ride upon him in the fashion of a steed, even as the Orcs did at times upon great wolves. Thus they made great speed, for Huan was swift and tireless.

In the pits of Sauron Beren and Felagund lay, and all their companions were now dead; but Sauron purposed to keep Felagund to the last, for he perceived that he was a Noldo of great might and wisdom, and he deemed that in him lay the secret of their errand. But when the wolf came for Beren, Felagund put forth all his power, and burst his bonds; and he wrestled with the werewolf, and slew it with his hands and teeth; yet he himself was wounded to the death. Then he spoke to Beren, saying: 'I go now to my long rest in the timeless halls beyond the seas and the Mountains of Aman. It will be long ere I am seen among the Noldor again; and it may be that we shall not meet a second time in death or life, for the fates of our kindreds are apart. Farewell!' He died then in the dark, in Tol-in-Gaurhoth, whose great tower he himself had built. Thus King Finrod Felagund, fairest and most beloved of the house of Finwë, redeemed his oath; but Beren mourned beside him in despair.

In that hour Lúthien came, and standing upon the bridge that led to Sauron's isle she sang a song that no walls of stone could hinder. Beren heard, and he thought that he dreamed; for the stars shone above him, and in the trees nightingales were singing. And in answer he sang a song of challenge that he had made in praise of the Seven Stars, the Sickle of the Valar that Varda hung above the North as a sign for the fall of Morgoth. Then all strength left him and he fell down into darkness.

But Lúthien heard his answering voice, and she sang then a song of greater power. The wolves howled, and the isle trembled. Sauron stood in the high tower, wrapped in his black thought ;but he smiled hearing her voice, for he knew that it was the daughter of Melian. The fame of the beauty of Lúthien and the wonder of her song had long gone forth from Doriath; and he thought to make her captive and hand her over to the power of Morgoth, for his reward would be great. Therefore he sent a wolf to the bridge. But Huan slew it silently. Still Sauron sent others one by one; and one by one Huan took them by the throat and slew them. Then Sauron sent Draugluin, a dread beast, old in evil lord and sire of the werewolves of Angband. His might was great; and the battle of Huan and Draugluin was long and fierce. Yet at length Draugluin escaped, and fleeing back into the tower he died before Sauron's feet; and as he died he told his master: 'Huan is there!' Now Sauron knew well, as did all in that land, the fate that was decreed for the hound of Valinor, and it came into his thought that he himself would accomplish it. Therefore he took upon himself the form of a werewolf, and made himself the mightiest that had yet walked the world; and he came forth to win the passage of the bridge.

So great was the horror of his approach that Huan leaped aside. Then Sauron sprang upon Lúthien; and she swooned before the menace of the fell spirit in his eyes and the foul vapour of his breath. But even as he came, falling she cast a fold of her dark cloak before his eyes; and he stumbled, for a fleeting drowsiness came upon him. Then Huan sprang. There befell the battle of Huan and Wolf-Sauron, and howls and baying echoed in the hills, and the watchers on the walls of Ered Wethrin across the valley heard it afar and were dismayed.

But no wizardry nor spell, neither fang nor venom, nor devil's art nor beast-strength , could overthrow Huan without forsaking his body utterly. Ere his foul spirit left its dark house, Lúthien came to him, ghost be sent quaking back to Morgoth; and she said: 'There everlastingly thy naked self shall endure the torment of his scorn, pierced by his eyes, unless thou yield to me the mastery of thy tower.'

Then Sauron yielded himself, and Lúthien took the mastery of the isle and all that was there; and Huan released him. And immediately he took the form of a vampire, great as a dark cloud across the moon, and he fled, dripping blood from his throat upon the trees, and came to Tar-nu-Fuin, and dwelt there, filling it with horror.

Then Lúthien stood upon the bridge, and declare her power: and the spell was loosed that bound stone to stone, and the gates were thrown down, and the walls opened, and the pits laid bare; and many thralls and captives came forth in wonder and dismay, shielding their eyes against the pale moon light, for they had lain long in the darkness of Sauron. But Beren came not. Therefore Huan and Lúthien sought him in the isle; and Lúthien found him mourning by Felagund. So deep was his anguish that he lay still, and did not hear her feet. Then thinking him already dead she put her arms about him and fell into a dark forgetfulness. But Beren coming back to the light out of the pits of despair lifted her up, and they looked again upon one another; and the day rising over the dark hills shone upon them.

They buried the body of Felagund upon the hill-top of his own isle, and it was clean again; and the green grave of Finrod Finarfin's son, fairest of all the princes of the Elves, remained inviolate, until the land was changed and broken, and foundered under destroying seas. But Finrod walks with Finarfin his father beneath the trees in Eldamar.

Now Beren and Lúthien Tinúviel went free again and together walked through the woods renewing for a time their joy; and though winter came it hurt them not, for flowers lingered where Lúthien went, and the birds sang beneath the snow clad hills. But Huan being faithful went back to Celegorm his master; yet their love was less than before.

There was tumult in Nargothrond. For thither now returned many Elves that had been prisoners in the isle of Sauron; and a clamour arose that no words of Celegorm could still. They lamented bitterly the fall of Felagund their king, saying that a maiden had dared that which the sons of Fëanor had not dared to do; but many perceived that it was treachery rather than fear that had guided Celegorm and Curufin. There fore the hearts of the people of Nargothrond were released from their dominion, and turned again to the house of Finarfin; and they obeyed Orodreth. But he would not suffer them to slay the brothers, as some desired, for the spilling of kindred blood by kin would bind the cures of Mandos more closely upon them all. Yet neither bread nor rest would he grant to Celegorm and Curufin within his realm, and he swore that there should be little love between Nargothrond and the sons of Fëanor there after.

'Let it be so!' said Celegorm, and there was a light of menace in his eyes; but Curufin smiled. Ten they took horse and rode away like fire, to find if they might their kindred in the east. But none would go with them, not even those that were of their own people; for all perceived that the curse lay heavily upon the brothers, and that evil followed them. In that time Celebrimbor the son of Curufin repudiated the deeds of his father, and remained in Nargothrond; yet Huan followed still the horse of Celegorm his master.