Excerpt from The Girl on the Train by Paula Hawkins, plus links to reviews, author biography & more

Jess, with her bold prints and her Converse trainers and her beauty, her attitude, works in the fashion industry. Or perhaps in the music business, or in advertising—she might be a stylist or a photographer. She's a good painter, too, plenty of artistic flair. I can see her now, in the spare room upstairs, music blaring, window open, a brush in her hand, an enormous canvas leaning against the wall. She'll be there until midnight; Jason knows not to bother her when she's working.

I can't really see her, of course. I don't know if she paints, or whether Jason has a great laugh, or whether Jess has beautiful cheekbones. I can't see her bone structure from here and I've never heard Jason's voice. I've never seen them up close, they didn't live at that house when I lived down the road. They moved in after I left two years ago, I don't know when exactly. I suppose I started noticing them about a year ago, and gradually, as the months went past, they became important to me.

I don't know their names, either, so I had to name them myself. Jason, because he's handsome in a British film star kind of way, not a Depp or a Pitt, but a Firth, or a Jason Isaacs. And Jess just goes with Jason, and it goes with her. It fits her, pretty and carefree as she is. They're a match, they're a set. They're happy, I can tell. They're what I used to be, they're Tom and me five years ago. They're what I lost, they're everything I want to be.

EVENING

My shirt, uncomfortably tight, buttons straining across my chest, is pit-stained, damp patches clammy beneath my arms. My eyes and throat itch. This evening I don't want the journey to stretch out; I long to get home, to undress and get into the shower, to be where no one can look at me.

I look at the man in the seat opposite mine. He is about my age, early to midthirties, with dark hair, greying at the temples. Sallow skin. He's wearing a suit, but he's taken the jacket off and slung it on the seat next to him. He has a MacBook, paper-thin, open in front of him. He's a slow typist. He's wearing a silver watch with a large face on his right wrist—it looks expensive, a Breitling maybe. He's chewing the inside of his cheek. Perhaps he's nervous. Or just thinking deeply. Writing an important email to a colleague at the office in New York, or a carefully worded break-up message to his girlfriend. He looks up suddenly and meets my eye; his glance travels over me, over the little bottle of wine on the table in front of me. He looks away. There's something about the set of his mouth that suggests distaste. He finds me distasteful.

I am not the girl I used to be. I am no longer desirable, I'm off-putting in some way. It's not just that I've put on weight, or that my face is puffy from the drinking and the lack of sleep; it's as if people can see the damage written all over me, can see it in my face, the way I hold myself, the way I move.

One night last week, when I left my room to get myself a glass of water, I overheard Cathy talking to Damien, her boyfriend, in the living room. I stood in the hallway and listened. "She's lonely," Cathy was saying. "I really worry about her. It doesn't help, her being alone all the time." Then she said, "Isn't there someone from work, maybe, or the rugby club?" and Damien said, "For Rachel? Not being funny, Cath, but I'm not sure I know anyone that desperate."

THURSDAY, JULY 11, 2013

MORNING

I'm picking at the plaster on my forefinger. It's damp, it got wet when I was washing out my coffee mug this morning; it feels clammy, dirty, though it was clean on this morning. I don't want to take it off because the cut is deep. Cathy was out when I got home, so I went to the off-licence and bought two bottles of wine. I drank the first one and then I thought I'd take advantage of the fact that she was out and cook myself a steak, make a red-onion relish, have it with a green salad. A good, healthy meal. I sliced through the top of my finger while chopping the onions. I must have gone to the bathroom to clean it up and gone to lie down for a while and just forgotten all about it, because I woke up around ten and I could hear Cathy and Damien talking and he was saying how disgusting it was that I would leave the kitchen like that. Cathy came upstairs to see me, she knocked softly on my door and opened it a fraction. She cocked her head to one side and asked if I was OK. I apologized without being sure what I was apologizing for. She said it was all right, but would I mind cleaning up a bit? There was blood on the chopping board, the room smelled of raw meat, the steak was still sitting out on the countertop, turning grey. Damien didn't even say hello, he just shook his head when he saw me and went upstairs to Cathy's bedroom.

Excerpted from The Girl on the Train by Paula Hawkins. Copyright © 1905 by Paula Hawkins. Excerpted by permission of Riverhead Books. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.