Celebrating her forty-fifth birthday at her local pub, popular podcaster Alix Summer crosses paths with an unassuming woman called Josie Fair. Josie, it turns out, is also celebrating her forty-fifth birthday. They are, in fact, birthday twins. A few days later, Alix and Josie bump into each other again, this time outside Alix’s children’s school. Josie has been listening to Alix’s podcasts and thinks she might be an interesting subject for her series. She is, she tells Alix, on the cusp of great changes in her life.

In this prequel to the international best seller The Ruin, set 10 years prior, bright-eyed Carrie Ryan is at the very start of her career. When she has a hunch about an ongoing murder investigation, she knows it could be her only chance to prove herself and truly break into the “boys' club” of Dublin’s police force.

Nisha Cantor lives the globetrotting life of the seriously wealthy, until her husband announces a divorce and cuts her off. Nisha is determined to hang onto her glamorous life. But in the meantime, she must scramble to cope--she doesn’t even have the shoes she was, until a moment ago, standing in. That’s because Sam Kemp—in the bleakest point of her life—has accidentally taken Nisha’s gym bag. But Sam hardly has time to worry about a lost gym bag—she’s struggling to keep herself and her family afloat.

Janey Markham is thrilled to be moving with her family to Buckingham Crescent, the smartest address in a desirable suburban town. Worried she’ll be excluded by the glossy local mothers, Janey is thrilled when she meets Tanya, the kind of woman she has always looked up to. Tanya takes Janey under her wing and her teenage daughter, Angel, is amazing with Janey’s little boy. As Janey and Tanya grow closer, Janey feels she can finally leave her troubled past behind.

Owen Pick’s life is falling apart. In his 30s and living in his aunt’s spare bedroom, he has just been suspended from his job as a teacher after accusations of sexual misconduct - accusations he strongly denies. Searching for professional advice online, he is inadvertently sucked into the dark world of incel forums, where he meets a charismatic and mysterious figure. Across the street from Owen lives the Fours family, headed by mom Cate, a physiotherapist, and dad Roan, a child psychologist. But the Fours family have a bad feeling about their neighbor Owen.

Minnie Cooper knows two things with certainty: that her New Year's birthday is unlucky, and that it's all because of Quinn Hamilton, a man she's never met. Their mothers gave birth to them at the same hospital just after midnight on New Year's Day, but Quinn was given the cash prize for being the first baby born in London in 1990 - and the name Minnie was meant to have, as well. With luck like that, it's no wonder each of her birthdays has been more of a disaster than the one before.

Gemma Robinson comes into Elliot’s life like a whirlwind, and they marry and settle into his home. When she asks him if her parents can come to stay for a couple of weeks, he is keen to oblige - he just doesn’t quite know what he’s signing up for. The Robinsons arrive with Gemma’s sister, Chloe, a mysterious young woman who refuses to speak or leave her room.

It’s summer in the city and passions are soaring along with the temperature - for everyone but Mitchell Fisher, who hates all things romance. He relishes his job cutting off the padlocks that couples fasten to the famous “love story” bridge. Only his young daughter, Poppy, knows that behind his prickly veneer, Mitchell still grieves the loss of her mother.

Coworkers Ruby and Harry are in love - but they're married to other people. They decide to tell their spouses that their marriages are over and to start a new life together. Ruby has wanted to leave her controlling husband for a while, so she tells him she's leaving and waits at the hotel where she and Harry are to meet. But Harry never shows up.

Eve Harding's world implodes one Sunday morning when she is violently assaulted and raped walking to a South London train station. As her attacker evades the police and is left to roam the streets to stalk his next victim, Eve is forced to seek out her assailant before he strikes again. With vengeance in mind, Eve is determined to find him in time and deliver justice on her own terms. In a game of cat and mouse, who is stalking who?

I’m Lucy, and I have a secret I have a beautiful home that I’m desperate to escape. But that’s not my secret. I tell my friends I’ve never wanted children when I always have. But that’s not my secret. My husband is a celebrated surgeon who tries to control me. But that’s not my secret. Adele knows. Once upon a time, I knew everything about her and she knew everything about me. Best friends forever. But now our secret is beginning to surface. I can trust her more than anyone. We made a pact. And she’s never do anything to hurt me. Would she?

It’s fair to say that Maddie’s life in London is far from rewarding. With a mother who spends most of her time in Ghana (yet still somehow manages to be overbearing), Maddie is the primary caretaker for her father, who suffers from advanced stage Parkinson’s. At work, her boss is a nightmare and Maddie is tired of always being the only Black person in every meeting.

One mother's past could cost her everything. Frankie Keegan is struggling. While she tries to make strides in her career, life at home is slowly unravelling as she is haunted by the secrets of her past. Someone else remembers. As the dark nights draw in, the anniversary of the loss of her brother looms, and Frankie is drawn back to the memories of that fateful night 20 years previously. As she descends into a guilt-ridden state, she begins to suspect that someone else is also remembering that night and they are determined to terrify her.

In 1997 teenager Sophie White and her three girlfriends decide they want to lose their virginity before summer is over. Roping in her childhood buddy Gareth and his mates, Sophie holds a party to get the deed over and done with, but the night doesn’t end as planned. Twenty years later, the group are brought back together when Gareth is killed in a car accident and Sophie begins receiving threatening messages. It seems the party wasn’t as innocent as everyone thought, and now someone wants payback.

Fresh out of prison, Jess Strickland has just six months’ probation to serve until she's free to get on with the life she left behind four years ago. With few options available, Jess takes a job at Bright’s, an industrial laundry company, alongside other ex-cons, all eager to keep their noses clean. Here she finds an ally in Karla, but soon learns her new boss, Terry, is not all he seems. Realising she’s no safer on the outside, Jess refuses to be a victim any longer. How far will she go to avoid going back to prison?