“All right, Lara?” Dad is glancing over at me.

“Yes!” I say brightly, and jab off the phone before he can see the screen. As organ Muzak begins, I sink back in my chair, consumed with misery. I should never have come today. I should have made up an excuse. I hate my family and I hate funerals and there isn’t even any good coffee and-

“Where’s my necklace?” A girl’s distant voice interrupts my thoughts.

I glance around to see who it is, but there’s no one behind me. Who was that?

“Where’s my necklace?” the faint voice comes again. It’s high and imperious and quite posh-sounding. Is it coming from the phone? Didn’t I turn it off properly? I pull my phone out of my bag-but the screen is dead.

Weird.

“Where’s my necklace?” Now the voice sounds as though it’s right in my ear. I flinch and look all around in bewilderment.

What’s even weirder is, no one else seems to have noticed.

“Mum.” I lean over. “Did you hear something just now? Like… a voice?”

“A voice?” Mum looks puzzled. “No, darling. What kind of voice?”

“It was a girl’s voice, just a moment ago…” I stop as I see a familiar look of anxiety coming over Mum’s face. I can almost see her thoughts, in a bubble: Dear God, my daughter’s hearing voices in her head.

“I must have misheard,” I say hastily, and thrust my phone away, just as the vicar appears.

“Please rise,” she intones. “And let us all bow our heads. Dear Lord, we commend to you the soul of our sister, Sadie…”

I’m not being prejudiced, but this vicar has the most monotonous voice in the existence of mankind. We’re five minutes in and I’ve already given up trying to pay attention. It’s like school assembly; your mind just goes numb. I lean back and stare up at the ceiling and tune out. I’m just letting my eyelids close when I hear the voice again, right in my ear.

“Where’s my necklace?”

That made me jump. I swivel my head around from side to side-but, again, there’s nothing. What’s wrong with me?

“Lara!” Mum whispers in alarm. “Are you OK?”

“I’ve just got a bit of a headache,” I hiss back. “I might go and sit by the window. Get some air.”

Gesturing apologetically, I get up and head to a chair near the back of the room. The vicar barely notices; she’s too engrossed in her speech.

“The end of life is the beginning of life… for as we came from earth, so we return to earth…”

“Where’s my necklace? I need it.”

Sharply, I turn my head from side to side, hoping to catch the voice this time. And then suddenly I see it. A hand.

A slim, manicured hand, resting on the chair back in front of me.

I move my eyes along, incredulously. The hand belongs to a long, pale, sinuous arm. Which belongs to a girl about my age. Who’s lounging on a chair in front of me, her fingers drumming impatiently. She has dark bobbed hair and a silky sleeveless pale-green dress, and I can just glimpse a pale, jutting chin.

I’m too astonished to do anything except gape.

Who the hell is that?

As I watch, she swings herself off her chair as though she can’t bear to sit still and starts to pace up and down. Her dress falls straight to the knee, with little pleats at the bottom, which swish about as she walks.

“I need it,” she’s muttering in agitation. “Where is it? Where is it?”

Her voice has a clipped, pinched accent, just like in old-fashioned black-and-white films. I glance wildly over at the rest of my family-but no one else has noticed her. No one has even heard her voice. Everyone else is sitting quietly.

Suddenly, as though she senses my gaze on her, the girl wheels around and fixes her eyes on mine. They’re so dark and glittering, I can’t tell what color they are, but they widen incredulously as I stare back.

OK. I’m starting to panic here. I’m having a hallucination. A full-on, walking, talking hallucination. And it’s coming toward me.

“You can see me.” She points a white finger at me, and I shrink back in my seat. “You can see me!”

I shake my head quickly. “I can’t.”

“And you can hear me!”

“No, I can’t.”

I’m aware of Mum at the front of the room, turning to frown at me. Quickly, I cough and gesture at my chest. When I turn back, the girl has gone. Vanished.

Thank God for that. I thought I was going crazy. I mean, I know I’ve been stressed out recently, but to have an actual vision-

“Who are you?” I nearly jump out of my skin as the girl’s voice punctuates my thoughts again. Now suddenly she’s striding down the aisle toward me.

“Who are you?” she demands. “Where is this? Who are these people?”

Do not reply to the hallucination, I tell myself firmly. It’ll only encourage it. I swivel my head away, and try to pay attention to the vicar.

“Who are you?” The girl has suddenly appeared right in front of me. “Are you real?” She raises a hand as though to prod my shoulder, and I cringe away, but her hand swishes straight through me and comes out the other side.

I gasp in shock. The girl stares in bewilderment at her hand, then at me.

“What are you?” she demands. “Are you a dream?”

“Me?” I can’t help retorting in an indignant undertone. “Of course I’m not a dream! You’re the dream!”

“I’m not a dream!” She sounds equally indignant.

“Who are you, then?” I can’t help shooting back.

Immediately I regret it, as Mum and Dad both glance back at me. If I told them I was talking to a hallucination, they’d flip. I’d be incarcerated in the Priory tomorrow.

The girl juts her chin out. “I’m Sadie. Sadie Lancaster.”

Sadie…?

No. No way.

I can’t quite move. My eyes are flicking madly from the girl in front of me… to the wizened, candy-floss-haired old woman in the Polaroid… and then back again to the girl. I’m hallucinating my dead 105-year-old great-aunt?

The hallucination girl looks fairly freaked out too. She turns and starts looking around the room as though taking it in for the first time. For a dizzying few seconds, she appears and reappears all over the room, examining every corner, every window, like an insect buzzing around a glass tank.

I’ve never had an imaginary friend. I’ve never taken drugs. What is up with me? I tell myself to ignore the girl, to blank her out, to pay attention to the vicar. But it’s no good; I can’t help following her progress.

“What is this place?” She’s hovering by me now, her eyes narrowing in suspicion. She’s focusing on the coffin at the front. “What’s that?”

Oh God.

“That’s… nothing,” I say hastily. “Nothing at all! It’s just… I mean… I wouldn’t look too closely if I were you…”

Too late. She’s appeared at the coffin, staring down at it. I can see her reading the name SADIE LANCASTER on the plastic notice board. I can see her face jolt in shock. After a few moments she turns toward the vicar, who is still droning on in her monotone:

“Sadie found contentment in marriage, which can be an inspiration to us all…”

The girl puts her face right up close to the vicar’s and regards her with disdain.

“You fool,” she says scathingly.

“She was a woman who lived to a great age,” the vicar carries on, totally oblivious. “I look at this picture”-she gestures at the photo with an understanding smile-“and I see a woman who, despite her infirmity, led a beautiful life. Who found solace in small things. Knitting, for example.”

“Knitting?” the girl echoes incredulously.

“So.” The vicar has obviously finished her speech. “Let us all bow our heads for a final moment of silence before we say farewell.” She steps down from the podium, and some organ Muzak begins.

“What happens now?” The girl looks around, suddenly alert. A moment later she’s by my side. “What happens now? Tell me! Tell me!”

“Well, the coffin goes behind that curtain,” I murmur in an undertone. “And then… er…” I trail off, consumed by embarrassment. How do I put it tactfully? “We’re at a crematorium, you see. So that would mean…” I wheel my hands vaguely.