Fand dismissed most of the faeries in the castle immediately, “for their comfort and yours,” she said to me. When I had last been a guest at Manannan’s estate, I wasn’t known as the Iron Druid, and the Fae rather liked me. Circumstances were much different now, and, as such, we were treated to the singular privilege of being served by Manannan and Fand in the kitchen. It smelled of apples, and when I remarked upon this they mentioned a cider press through a door in the rear. They set out a platter of fruit, cheese, and bread, then poured us each a flagon of ale and toasted our health. They gave Oberon a ham bone with plenty of meat left on it.

"Please tell me it’s okay to eat this. It smells so good," Oberon said.

Yes, it’s okay.

Oberon set his ears back and reared up on his hind legs playfully. "Have at thee, Hamlet!" he said, and pawed at it a couple of times before chomping down and trotting off to enjoy it elsewhere.

Manannan and Fand wanted to learn more about Granuaile since she was shortly to be a full Druid, so they encouraged her to talk about herself. Flidais and Perun quickly lost interest, however, and began conducting a hushed conversation of their own, every murmur vibrating with the frisson of sexual tension.

Before long, Granuaile was talking directly to Fand. The god of the sea had apparently been waiting for this development, because Manannan jerked his head at me to repair to another room, where there was an open window looking out on his sheep pasture.

“Fly with me down there for a moment?” he asked, pointing.

It was unusual, but it seemed a harmless request, so I shrugged. “Sure.” We stripped and shifted to our bird forms; he was a great shearwater and I a great horned owl. Manannan took his cloak of mists with him in his talons. We leapt from the window and coasted down to the sheep, where we shifted back to human. Manannan quickly shook out his cloak and used it, enveloping us entirely in mist. Then he bound the air around us so that no sound could travel out of a bubble around our heads.

“Faeries and enchantments everywhere up there,” he explained with a jerk of his head toward the castle, “and some o’ them are quite talented at remaining inconspicuous while they eavesdrop. I just wanted to have a word with ye that wouldn’t be overheard, and I didn’t want our lips read either.”

“Okay,” I said, though his preamble made me curious and more than a little nervous.

“It’s not only Bacchus who wants to see ye dead,” he explained, “or who might suspect you’re still alive. There was an envoy from the Svartálfar a couple o’ years back, asking if ye might be alive after all.”

“Well, I suppose it had to happen someday,” I said, and sighed. “I actually have cause to blame the dark elves.”

“Blame them for what?”

I shrugged. “Whatever vexes me at any given moment. They have been my universal scapegoat for ages. The truth of the matter is I don’t know much about them.”

One of the stranger developments of modern times is that more people have heard of dark elves today than at any other time in human history. This is almost entirely due to the twin influences of role-playing and fantasy-based video games. Or perhaps more credit is due to the artists who depicted them visually with dark skin and fantastic white hair; they had impossibly magical manes, as if they’d found some eldritch concoction in the deeps that gave them +5 flowing locks.

Even literature got it wrong. There are only a couple of passing references to dark elves in Sturluson’s Prose Edda, but they’re a bit confusing since they seem to conflate the dark elves with dwarfs. I have often wondered how much of that was intentional; in my mind it’s impossible to make such a mistake. They didn’t look a damn bit alike, if my sources were correct.

To be fair, Snorri Sturluson had priorities other than filling in the history of the dark elves. He wanted to preserve his country’s myths and culture without upsetting the Christian authorities of the time. He had to stretch like Mr. Fantastic to make the Norse gods descendants of the Trojans—and thus, to the Christians, not really gods at all, merely heroes—and he probably couldn’t figure out a way to explain the dark elves satisfactorily. Then again, I wouldn’t be surprised to learn that the Svartálfar had paid him a visit while he was writing the Edda and encouraged him to elide their existence all he wanted—perhaps more than he wanted.

The reason that there is so little information about dark elves is that they tend to keep to themselves, and, in truth, from what little I have heard, this is rather kind of them. Any interaction they have with humans tends to ruin the humans’ day.

“I know a bit about them,” Manannan said. “I got the short version o’ their history from one o’ the Álfar.”

“The Álfar spoke to you? Why?”

“This was some time ago. I had the story from a treasure hunter who wanted my help in locating wrecks at the bottom o’ the Irish Sea. Since he wanted a map, I asked him for a map in kind. I never could figure out where the nine realms were located on the World Tree, so he gave me a map that he swore was truth and told me a story about how the Svartálfar were born. Would ye like to hear it?”

“Yes, I would—and I’d love to see the map as well. If the dark elves are actively searching for me, I’d prefer to be armed with as much knowledge as possible.”

“That is wise, especially where fighting them is concerned.”

“Why so?”

“Patience, Siodhachan. I’ll tell all, even as he told it to me.”

Ages ago, even before the Tuatha Dé Danann had come to Ireland, the king of the Álfar—for there was only one kind of elf back then—commissioned a map of the Nine Realms of Yggdrasil. Asgard, Álfheim, and Vanaheim at the top were well known, but less was known of the six lower realms. The lowest three, in particular, were almost complete mysteries. Niflheim was a land of ice, and it was within that realm that Hel reigned over the moaning, inglorious dead; Muspellheim was a land of flames, where Surtr and the fire jötnar lived, awaiting the day of Ragnarok, when they could burn the whole of creation; but there was another land, both between and underneath them, subterranean and dark, beyond the jaws of the great wyrm Nidhogg, that did not even have a name, and no one knew what waited there in the black silence.

The largest party of Álfar was sent to explore this land, and none returned. All other parties returned and the map grew into an atlas, yet the king was displeased by the loss of the last crew. Another party, half again as large, was sent to seek them after forty years, but they did not return either. Ailing and old, this king—whose name has been purposefully forgotten by the Álfar—sent out a series of single adventurers. They were told not to explore but rather to discover the fates of their forebears and report back.

The answer to the mystery came three years later. Five strange beings appeared at the court of the Álfar king. Dressed in robes of a white material that looked like silk yet shimmered so that other colors reflected from its surface, they very nearly sparkled when they moved.

The beings appeared to be elves, except that instead of the light flesh and light-blond hair of the Álfar, this company had skin of obsidian. Each had a single queue of jet-black hair growing from the very top of his head, bunched together in places with silver circlets and falling down to the waist. Their eyes were green and abnormally large. They carried weapons unlike any the Álfar had seen, longish curved daggers that were not quite fit to be called swords, crafted not of iron or bronze but of some dark material; hilt, blade, and guard were all made of the same inky substance.

Approaching the throne, the strangers bowed but did not kneel to the king. He demanded to know who they were.

The one in the middle answered: “We bring greetings from Svartálfheim, the ninth realm of Yggdrasil.”

“What do you say? Explain.”

They were descendants of the first party he’d sent to the subterranean world, the entrance to which lies between the Ylgr and Vir rivers, and they had come to tell him and all Álfar that it was named Svartálfheim.

“You’re elves, then!” the king cried. “My subjects!”

“No, not your subjects. The sons of your former subjects.”

The king was not pleased by this show of independence but not inclined to argue the point. He was not sure he wanted them for subjects, for in his eyes they were strange.

“How came you to look thus?”

“We were given the Gjor at Reykr, the Gift of Smoke. We are now Svartálfar, as you are Ljósálfar.” This was the first time the distinction was made between the two races.

“What nonsense is this?” the king demanded.

“Svartálfheim is nothing like Álfheim. The caverns have changed us. We are no longer like you. But, for the sake of our former kinship, we would have ties with you so that both our kingdoms may flourish.”

“Both our kingdoms?” the king spluttered. His face grew red and he stood from his throne. “You have some king other than I?”

“Of course. You are Ljósálfar, not Svartálfar. We would not suggest that one of us lead your people.”

“And that is as it should be! But you owe me your allegiance! I funded your expedition! I supported the families left behind!” Thinking of this, the king decided they should be his subjects after all. “And, despite your dark skin, you are Álfar! Acknowledge me as your sovereign!”

“Our sovereign is in Svartálfheim. We are but ambassadors of his goodwill.”

“Goodwill would be acknowledging your rightful king. If I am not your sovereign, then you and your ancestors are deserters and traitors.”

The five Svartálfar stiffened. “We are none such,” one of the other dark elves said. He was not the spokesman, but none of his companions bristled at his interruption. “We are a different people now, as your senses must clearly report. We acknowledge our debt to you and will gladly repay your generosity. But we will not subject ourselves to your rule when you are none of our own.”

Perhaps a less prideful king would have found the strength to negotiate from this point. Perhaps the dark elves had said enough to provoke any king beyond all endurance. Regardless of might-have-beens, the king of the Álfar roared for his champions to take the dark elves and throw them in his dungeon.

“We wish all here to remember that we did not begin the violence and that we offered to pay our debts to the Álfar,” the spokesman called loudly. “You cannot prevail against our martial art, Sigr af Reykr. Send to Svartálfheim when your new king wishes to talk in peace.”

It was an odd thing to say, since they had yet to move, but the reason for it became clear shortly. When the Álfar champions tried to seize them, the Svartálfar became incorporeal, their white robes falling to the ground and their silver hair ties clinking after them, as something like coal dust bloomed where they had stood. Their strange knives did not fall to the ground but transformed with them. The dark elves became solid again outside the ring of champions, na**d, holding those wicked curved blades, as black as their bodies. They could have slain all the Álfar then with a twitch of their wrists. Instead, they waited for the champions to turn, and this time the champions tried to use their weapons. Swords and axes swung at the dark elves but swished through nothing but black mist. Four clouds swirled back out of reach, but one wove sinuously through the air toward the king. The spokesman for the Svartálfar became solid at the bottom of the steps leading to the king’s throne, black knife in his left hand.

“Your orders gave our people life,” he said, “but we will let no one order us into submission. Rethink your orders and let us talk peaceably, or else you and you alone will suffer for overreaching.”

“Slay them all!” the king ordered, and his bodyguards rushed down to meet the threat.

The dark elf waited until their weapons were descending upon him, then he turned into a plume of curling smoke and rose up the steps toward the king. Seeing this, the king drew his sword. His bodyguards would not recover and reach him in time. He swiped at the tendrils of smoke, to no effect. Long wisps of it entered his mouth, and he coughed once before he died.

The dark elf solidified with his right arm down the king’s throat. He yanked hard and tore free the king’s jaw and unmoored his throat from his spine. The gush of blood showered the elf in gore, but he turned to mist again and the blood fell like rain as the king’s corpse tumbled down the stairs to meet his bodyguards, a silent testimonial to their utter failure. This, then, was Sigr af Reykr, Victory from Smoke.

The stunned court of the Álfar noticed two things as the Svartálfar retreated: One, the dark elves never kept their incorporeal form for more than five seconds—they always solidified for at least a full second before dissolving again to mist—and, two, they could be killed. The latter was discovered just before the Svartálfar exited the audience chamber. An archer, high on the balcony surrounding the court, had been closely observing the changes and movements of the dark elves. It was he who realized their smoke form could last no longer than five seconds. He nocked an arrow and carefully followed the movements of a single dark elf. Once the villain turned to smoke, the archer counted to five and released his arrow at the center of the mist when it was but ten paces from the door. The dark elf became flesh a split second before the arrow lanced into the space between his shoulder and neck, spearing his vitals and ending his life.

He collapsed before the door and the champions bore down on him, stabbing him again and again for surety, but in all likelihood he was already dead. Within seconds the body began to crumble in on itself, smoke rose from the corpse, and inside of a minute all that was left was carbon mixed with fluid, a wet puddle of tar with the archer’s arrow in the middle of it. The blade, too, dissolved into the mess.