On the fifth step I caught up with the man in front. Like lovers entering an icy sea we felt together with our toes. Step-by-step we descended and the tide of dark rose first to our thighs, then our chests. My bare legs prickled with cold then the darkness enveloped my head.

My lantern revealed walls decorated floor to ceiling with hieroglyphs. As I wondered what ancient curses surrounded us, we rounded a corner to find a large antechamber, riddled with tunnels like black mouths. In the centre the overseers were waiting to take the light.

“We’re setting up base there.” Sunbird indicated the lanterns already clustered by the far wall. “Stay out of the way until you’re needed.”

I followed the muted speech of my fellows, stumbling blindly towards the noise until I thumped into another of the men. I ignored his curse and wriggled into a space to try and meditate.

I should have fled.

There was a shout outside and I almost dropped the book. “Taylor Oh!”

I opened my window and leaned into the air. Justin was standing on the street, hands cupped round his mouth. “I can’t get in.”

A secret smile touched my lips.

Of course he couldn’t.

“I’ll come and get you.” As I passed the dresser I put the book down carefully and looked, not at Mum this time, but in the mirror. Something made me pick up my hairbrush. Swiftly I dragged it through my hair, shaking it out over my shoulders. Then I opened my bedroom door, sucked in a breath at the sight of the dimly-lit hallway and sped as stealthily as possible to the vestibule.

I opened the door and peered out. Justin stood at the top of the steps. “I tried to walk through the door, but it’s solid. Don’t tell me your front door’s cursed too.” He sounded grumpy and tired and I couldn’t help smiling as he tried to walk past. “Ow.” He rebounded onto the pavement and rubbed his shoulder. “I don't understand; there’s nothing there.”

I rubbed my palm on my jeans. “I’m not sure if this’ll work but we can try. Here, you’ll have to take my hand.” My lip curled as I held my arm out to him.

Justin looked at it. “You don’t mind?”

“It’s the only way you’re getting in.”

I braced myself for the familiar hateful jolt, but when Justin’s fingers wrapped around mine they just felt dry and cool; no electric ice.

I walked backwards, Justin walked gingerly forwards and he was in.

As he passed the front door he shuddered and dropped my hand. “What was that? It was horrible, like walking through jelly.”

I checked behind me. Dad’s door was still shut. “Actually, you were right,” I whispered. “The house is cursed – Mum did it. She found these hieroglyphs a few years ago. They used to put them on Egyptian tombs to stop the ghosts of the pharaohs’ servants from escaping. She figured if it stopped ghosts from getting out of a stone pyramid, it might stop them from getting into a stone house. They’re engraved right there, under the ivy.”

“So I’m the first ghost that’s been in here.” He sounded impressed.

I nodded. “For a while.” I gestured towards the stairs. “Come to my room, dead boy.”

“Taylor, is that you?”

Automatically I panicked and looked at Justin; but of course Dad wouldn’t see him.

The study opened and he rolled into view. He looked exhausted.

“Are you alright, Dad?”

“I'd be better if I hadn't had a call from the school today, asking why you've hardly been in class this week.”

I flushed and stammered, caught without an excuse.

“I told them you were ill.” He rubbed a big hand over his eyes. “At least I didn't have to lie.”

“I'm sorry.”

“The only thing I can think to do for you is find a cure, but...”

“What?” My arms prickled with terrified apprehension. Was he going to send me away after all?

“I'm failing you, Taylor, and I don't know how much longer we can go on like this.”

All I could do was repeat myself, but the apology sounded hollow even to me.

Dad sighed. “I need another sample. Give me your arm, please.”

“D-Dad.” My eyes flicked sideways. Justin had stepped towards the kitchen as if to give us privacy, but he was watching. “Can we do this later? I’m in the middle of something.”

“I need it now. Are you sick at the moment?”

I showed him my gloved hand.

“That’s… good.” He rolled the syringe between his fingers. “Come on then.” He waved me ahead of him into the study. “Our evening out was good for me, it cleared my head. I think I’m onto something.”

A sigh quivered on my lips as I passed the threshold and took in the mess of equipment on the desk. “You’ve said that before,” I reminded him.

“This time is different, there’s a definite change in your blood when you’re sick.” He frowned. “I’ve booked a session with the electron microscope at Kings, but I can’t get in for a couple of months. I think the change might even be at a mitochondrial level. That’s where your cells make energy. But I can’t see it clearly with this thing.” He gestured angrily at his microscope, the best money could buy outside a real lab.

“Then why do you need more blood?” I huddled over my arm. “Can’t I have a break? I’m sore.”

He turned his frown on me. “You’re right; your arm does need a rest. I’ll take a few mils from your leg. Take off your trousers.”

“Dad!” I looked at the door. Justin was staring into the room.

“Come on, Taylor, we haven’t got all night.”

“I don’t want to do this any more.”

He tapped his fingers on the wheel arch of his chair. “I know this is hard, Taylor, for both of us. But I’m close, I can feel it.”

Looking for something to distract him I thought of The Tale of Oh-Fa that he'd left in the dining room. “Why were you reading Mum’s book?”

Dad followed my gaze towards the door. “Obviously it’s only a story, but there’s a bit in it that’s interesting, perhaps a kernel of truth. Oh-Fa’s granddaughter writes that he drank something after he made the so-called deal. Maybe your ancestor ingested some infected blood when he was in the tomb.”

“Blood?” I frowned.

“If you swallow blood containing a viral vector that carries an oncogene, it can insert itself onto host DNA and disrupt normal genes.” Dad raised his eyebrows. “Whatever you choose to call it – curse or illness – what you have has to be genetic; a dominant gene on the x-chromosome with a marker that kicks in at puberty. If only I could work out how to find that viral vector...” he shook his head. “Well, it’s only a story.”

He pulled the wrapper from a sterile syringe and I stepped backwards.

“Taylor,” he sighed. “Will it help if I overlook the conversation I had with Mr Barnes this morning?”

I pressed my lips together. “I want to keep Mum’s book and see her notes.”

The creases in Dad’s face deepened. “I don’t think that’s a good idea. I put your Mum’s things away because I don’t want your hallucinations being fed with yet more stories.”

“But–”

“I’m not ready to give up on you yet. Let me have this sample and I won’t ask for any more for a while, you can have that break.”

“Fine.” I sighed.

“And you'll go back to school?”

I nodded, then paused with my hand over my belt.

“Taylor, I’m your father, just take them off.”

Justin backed into the hall. When I was sure he couldn’t see me I slid out of my jeans. Dad pointed at a stool and I brushed away a thin layer of dust before I lowered myself onto the seat. Then I looked away as Dad approached with the needle.

I held my breath as the point broke my skin and tried hard not to wince at the insistent tug of blood being taken from the vein.

“All done.” Dad pressed a pad of cotton wool over the needle and pulled it free. An ampoule sat on top of his desk, ruby in the light that shone through it.