The Woman Next Door: A dark and twisty psychological thriller. Cass Green

and find it was filled with wine bottles and online shopping packaging. It really was quite irritating. I’m very fond of Melissa, but I suppose this began to really bother me on top of everything else.

      At first I’d gently remove the items and put them back into her own bin, hoping that it would get the message across. But it carried on until one day when my entire bin was filled with packaging from Habitat. (It contained a duvet. Duck down. 9.5 tog.) I really felt I should say something. So I went round there. I was perfectly polite and friendly. But I think I may have caught her on a bad day.

      She is usually immaculate, as I said, from her shining crown of blonde hair to her prettily painted toenails. That day though, she had on some sort of tracksuit thing and her hair was scraped back into an untidy ponytail. Her eyes looked dull and oddly vacant. It was like no one was there, if that makes sense. Although my heart went out to her (really, I longed to give her a hug and tell her it would be okay) I was determined to say my piece.

      But it all seemed to go wrong. She listened without commenting and then simply closed the door in my face. I felt as though I had been slapped. I did something quite out of character at home. I found a dusty old bottle of sherry at the back of my cupboard and had a small glass to calm my nerves. The cloying thickness almost made me sick. God knows how long it had been there. But the whole thing really cut me to the quick.

      Such a silly business to fall out over; things have never really been the same since.

      I couldn’t think of a reason to go round. I would try to make conversation from the front garden (I’d watch for the car and then make sure I was in position) but it has never really been the same.

      I so wish that we could be friends again.

      Bertie, who always senses when I am distressed, huffs to his feet now. I reach down and scratch the wiry grey hair behind his ears in what I think of as his ‘special spot’. He shudders with bliss and his eyes roll back in his head.

      My boy.

      I’ve read that King Charles spaniels can live to the age of fifteen. Bertie is only thirteen but I can tell he has lost his lustre a bit lately. He’s not the only one.

      ‘Shall Mummy get your dinner?’ I say wearily.

      His tail jerks and circles like a wonky propeller. I get up. I pour some of his special food into his bowl and place it down on his mat. He starts to eat it with enthusiasm but then loses interest. Sighing again, I open the back door. The kitchen suddenly feels very small.

      For one awful moment I think I am going to go quite mad. I’m so very sick of being lonely.

      And then, as I stand there, looking out at my overgrown lawn, I have the beginnings of a wonderful idea.

      Melissa must be having a party, with all that alcohol arriving. There will be such a lot to do. It would take me no time to knock up some scones or a Victoria sponge. She never was much of a baker. She once told me that my lemon drizzle cake was like ‘sex on a plate’. I was a bit embarrassed by this, to be honest, but I appreciated that she meant it in a complimentary way. And didn’t I have an urge to do some baking earlier? Maybe it was an omen. Perhaps I was meant to leave the library the way I did.

      For all I know, Melissa has been waiting for an excuse to patch things up between us. This could be the perfect opportunity to mend bridges.

      I’m not even offended that I haven’t been invited. I couldn’t expect her to, when relations were so strained between us.

      ‘Right, Bertie,’ I say, reaching for my apron, which hangs on a hook on the kitchen door. ‘Mummy had better get busy.’

      I’m the older, more mature, person. It’s time to put things right.

       MELISSA

      The diazepam doesn’t seem to be working. She took it more than two hours ago but she’s still waiting for the blunting sensation to take effect, for all the hard angles in her mind to soften and blur. The sensation of unease she experienced at the hairdressers has clung to her like a succubus.

      She keeps telling herself there’s no reason to feel anxious.

      Nothing has happened.

      All is well.

      Melissa stands on the landing and rotates the tips of her fingers into the centre of her forehead. This supposedly wards off headaches, according to Saskia, who picked it up from some alternative therapist. She swears by it, but Melissa remains unconvinced as she gouges hard, rhythmic circles into her skin.

      Tilly emerges from her bedroom dressed in pink and green pyjamas that strain across her hips. Her hair is matted on one side and her face is puffy with sleep. She has inherited the distinctive russet brown curls Melissa used to have. It’s a lovely colour and Melissa wishes she herself had been able to keep it.

      In every other respect Tilly is her father’s daughter, from the heavyset shoulders and square, blunt-toed feet, to the almost bovine brown eyes, fringed with enviable lashes. Melissa thinks she carries about a stone more than she should, but she is still a very attractive girl when she makes an effort.

      Today she has violet smudges under her eyes. Since the GCSE exams finished, she lives in onesies or pyjamas and thick socks and spends her days padding from fridge to bedroom, where she lies like a large tousled cat, tapping at her iPad and dozing.

      But today is a party in her honour and she clearly hasn’t been through the shower yet, judging by the cocktail of teenage sweat, stale coffee, and the sickly watermelon-flavoured lip balm she favours rising from her. Her iPad sits lightly on one hand like a prosthesis. Tilly blinks, slowly, as though she has emerged from a subterranean lair.

      Mother and daughter eye each other and Tilly attempts an exploratory smile, which morphs into a yawn that smells of sleep. Melissa’s face remains impassive. She doesn’t want to shout at Tilly and yet it would be so very easy to do right now.

      ‘When are you planning to get ready?’ she says crisply. ‘This is your party, after all.’ Downstairs there is a metallic clatter as the caterers begin to pack away some of their equipment. One of them laughs loudly and says, ‘You wish!’ A song from Melissa’s youth – ‘Babooshka’ by Kate Bush – wails tinnily from the radio on the windowsill. She has already asked them to turn the radio down once. Thank God they are almost done.

      Tilly’s eyes are already being dragged towards the abyss of her iPad, where Walter White is paused, staring out at red, baked earth. She has been on a Breaking Bad marathon for the last two days, only pausing to sleep and eat.

      ‘Soon, Mum. I promise.’

      Tilly disappears back into her bedroom.

      It’s the gentleness in her voice that has prompted Melissa’s eyes to prickle and ache, unexpectedly. As if Melissa were being humoured. She has made it quite plain that she doesn’t really want a party. But she will obviously play along, just to keep her mother happy. In her own time.

      She’d always imagined, in the days when all her tiny daughter did was cry, shit, and feed, that the compensations would come when she was older; when she was a proper person, they would do all the things she never did with her own mother. Melissa pictured her and Tilly cosy on a sofa, bonding over 1980s movies like The Breakfast Club and Pretty in Pink. Or mother and daughter puffing out their cheeks and complaining good-naturedly about aching feet as they sat down to a good lunch, surrounded by bags from a morning spent shopping.

      But none of these fantasies had ever quite come off.

      Tilly didn’t like what she called ‘girly’ films, preferring instead to watch violent science fiction thrillers with her father. And the few times Melissa had coaxed her daughter into the West End to shop, they had ended up falling-out and glowering at each other over uneaten salads in Fenwick’s café.

      Melissa thought it would be