Adele has had a colorful romantic past, but she's finally found her soulmate in Tom. They're engaged, and she's looking forward to a future of blissful happiness. But then she realizes her ex-boyfriends are turning up dead. At first, the deaths seem accidental, but soon a sinister pattern emerges. All of Adele’s former partners are being killed off—in the order she dated them. As the body count grows, Adele has to figure out who is doing this and why. Otherwise, it’s only a matter of time until the killer gets to Tom.

Amanda is a hardworking single mum, completely focused on her job and her daughter, Louise. She’s been saving for years, and now, finally, she can afford to give up work and chase her dream. But then, on her commute home from London to Brighton, she meets a charming stranger - who seems to know everything about her. He delivers an ultimatum. She needs to give him the code for the safe where she keeps her savings before the train reaches Brighton - or she’ll never see Louise again.

Imogen should be enjoying her life–she is happily married with a high-powered career that could see her rise to the very highest levels of management. But that’s never going to happen because Imogen’s boss, Michael, has discovered she has a secret, something she has hidden from everyone, even her devoted husband. If the secret is ever revealed, her life will be destroyed, which means Imogen is completely and utterly in Michael’s power, and he loves it.

Cara is a devoted mother to two little girls. She loves her hectic life, but she looks forward to a relaxing weekend alone while her husband, Michael, takes the kids on a camping trip. But their dream trip turns into a nightmare when their daughters are taken, deep in the forest.

Millie has just served a long sentence for a murder she didn’t commit. It’s her identical twin sister Eve who was the killer...and the person who framed her. Millie is willing to forgive Eve and hopes they can still be loving sisters. But when she is released, instead of welcoming her, Eve coldly rejects her. Now Millie only wants one thing: revenge.