he missed him.

      She missed his voice, and his humour, and his warm arrogance, and those moments in his company when she realised that this was when she came alive – finally living, by the side of a dead man.

      For eleven months he had been gone and for almost a year Valkyrie had been searching for his original skull, to use as a tool to reopen the portal and get him back. She slept when she had to and ate when she needed to. She let the search consume her. Time spent with her parents grew less and less. She’d been to Germany, and France, and Russia. She had kicked down rotten doors and run through darkened streets. She had followed the clues, just like he’d taught her, and now, finally, she was close.

      Skulduggery had once told her that the head he now wore was not his actual head – he had won it in a poker game. He said his real head had been stolen, while he slept, by little goblin things that had run off with it in the night. At the time he hadn’t gone into any further detail, but he had filled in the blanks later on.

      Twenty years ago, a small church in the middle of the Irish countryside was being plagued by what appeared to be a poltergeist. The angry spirit was causing havoc, terrifying the locals and driving away the police when they came to investigate. Skulduggery was called in by an old friend and he arrived, wrapped in his scarf with his hat pulled low.

      The first thing he learned was that the culprit wasn’t a poltergeist. The second thing he discovered was that it was most likely a type of goblin, and there were probably more than one. The third thing he unearthed was that the church, as small and as spartan as it was, had a solid gold cross set up behind the altar, and if there was one thing goblins loved, it was gold.

      “Actually, if there’s one thing that goblins love,” Skulduggery had said, “it’s eating babies, but gold comes in a close second.”

      The goblins were trying to frighten everyone away long enough so that they could pry the cross loose and make off with it. Skulduggery set up camp and waited. To pass the time, he sank into a meditative state, to be roused whenever anyone got too close to the church.

      The first night the goblins came and he leaped out, screaming and throwing fireballs, scaring them witless. The second night they crept up, whispering among themselves to bolster their courage, and he appeared behind them and roared curse words and they ran off once again, crying in fear. But the third night they surprised him, and instead of sneaking up to the church, they sneaked up on him and grabbed his head while he was deep in a meditative trance. By the time he had figured out what was going on, they had disappeared, and Skulduggery had nowhere to put his hat.

      Now wearing a head that was not his own, Skulduggery’s investigations had revealed that the goblins later ran foul of a sorcerer named Larks, who had stolen their paltry possessions and sold them on. The investigation ended there, as other events began to call for Skulduggery’s attention. He had always planned to get back to it, but never did, and so the rest was up to Valkyrie.

      The skull, she had learned, was bought by a woman as a surprise, and somewhat unsettling, wedding gift for the man she was to marry. The woman had then used the skull to beat that man to a bloody and pulpy death after she found him stealing from her. The murder inquiry was undertaken by “mortal” police – Valkyrie hated that expression – and so the skull had been logged as evidence. Now known as the Murder Skull, it had found its way on to the black market, and changed hands four times before a sorcerer named Umbra sensed the traces of magic within. Umbra had acquired it and within a year it came into the possession of Thames Chabon, notorious wheeler, unscrupulous dealer, and all-round shady character. As far as anyone knew, Chabon still had the skull. It had taken considerable effort to even get in touch with him, and Valkyrie had been forced to use quite unorthodox means to do so.

      The unorthodox means stood by the side of the quiet street, hands in pockets. His name was Caelan. He had been maybe nineteen, twenty years old when he’d died. He was tall, his hair was black, and his cheekbones were narrow slashes against his skin. He glanced at Valkyrie as she approached, then looked away quickly. It was close to nightfall. He was probably getting hungry. Vampires had a tendency to do that.

      “Did you arrange it?” she asked.

      “Chabon will meet you at ten o’clock,” he muttered, “tomorrow morning. The Bailey, off Grafton Street.”

      “OK.”

      “Make sure you’re on time – he doesn’t wait around.”

      “And you’re sure the head is Skulduggery’s?”

      “That’s what Chabon said. He didn’t know why it’s so valuable to you though.”

      Valkyrie nodded, but didn’t respond. She didn’t tell him about the Isthmus Anchor, an object belonging to one reality but residing in another. She didn’t tell him how it kept the portals between these realities active as a result, or that all she needed to open a portal near Skulduggery was his original head and a willing Teleporter. She had the Teleporter. Now she needed the skull.

      Caelan looked across at the setting sun. “I’d better go. It’s getting late.”

      “Why are you doing this?” Valkyrie asked suddenly. “I’m not used to people helping me out for no reason.”

      Caelan kept his eyes off her. “Some time ago you imprisoned a man named Dusk. I don’t like this man.”

      “I’m not too fond of him either.”

      “You scarred him, I hear.”

      “He had it coming.”

      “Yes, he did.”

      He paused, then walked away. His movements reminded her of the terrible, predatory gracefulness of a jungle cat.

      When he was gone, Tanith Low emerged from the alley on the other side of the street, all blonde hair and brown leather, hiding her sword under her long coat.

      Tanith took her home, and Valkyrie stood beneath her bedroom window and swept her arms up by her sides, clutching the sharp air and using it to lift her to the sill. She tapped on the glass and a small light turned on. The window opened and her own face – dark-eyed and dark-haired – peered out at her.

      “I thought you weren’t coming home tonight,” her reflection said.

      Valkyrie climbed in without answering. Her reflection watched her close the window and take off her coat. It was as cold inside as it was out, and Valkyrie shivered. The reflection did the same, approximating a human response to a condition it had never experienced.

      “We had lasagne for dinner,” it said. “Dad’s been trying to get tickets for the All-Ireland Championship on Sunday, but so far he hasn’t been able to.”

      Valkyrie was tired, so she just gestured at the full-length mirror inside the wardrobe door. The reflection, having no feelings to hurt, stepped into the glass then turned and waited. Valkyrie touched the mirror and the reflection’s memories swam into her mind, settling beside her own. She closed the wardrobe and realised she hadn’t been home in eight days. She had a sudden longing to see her parents and not just settle for the memories viewed through the eyes of an emotionless substitute. But her parents were asleep down the hall and Valkyrie knew she would have to wait until morning.

      She took a black ring from her finger and put it on the bedside table. Ghastly, Tanith and China didn’t like the ring – it was a Necromancer tool after all. But for what Valkyrie had had to face over the past eleven months she had needed something extra, and her natural aptitude for Necromancy had provided