Eve wanted nothing more than to be a mother. She and her husband, Aidan, planned to have a family, but with each devastating miscarriage her hopes dwindled. When she eventually gave birth to her daughter, Kayla, it should have been the happiest time of her life. Instead, it was a waking nightmare for Eve and one she was desperate to escape. Now, Eve has left all that behind. She pretends that she never had a child and keeps her secrets close. But someone knows the truth. They know that Eve told a lie, and the clock is ticking before her shocking decision is revealed.

Three years ago, nurse Zoe's son Ethan was found drowned in a muddy river by their home, along with his best friend, Josh. With no witnesses, their deaths were ruled a tragic accident. Heartbroken, Zoe and her family move away from her home. They’re just beginning to get back to some kind of normality when, out of the blue, Zoe receives an anonymous email: "You need to find out the truth about what happened to your son. Don’t let this rest. Don’t believe the lie." Shaken, Zoe starts an obsessive hunt for the truth.

Mia Hamilton lived the perfect life with her husband, university teacher Zach, and their two-year-old daughter. But everything changed when Zach committed suicide on the same night one of his students vanished. Five years later, just when Mia is beginning to heal, stranger Alison walks into her life, saying her husband didn't kill himself. Fragile, slight Alison leads Mia on a path into Zach's past, and Mia begins to think she never really knew her own husband.

When Sasha receives a call from her old university friend Gabby inviting her to spend Christmas at Gabby’s remote Scottish lake house, Sasha knows she shouldn’t go. Twelve years ago, on Christmas Eve, when Sasha and her five closest friends were celebrating the festive season, something truly horrific happened that would change the course of their friendship forever. Something that meant Sasha hasn’t spoken to any of them since that night.

The night that throws a wrecking ball into Abby’s life starts out perfectly at first. There’s still a hint of summer sun in the purple-streaked sky. Abby and her best friend, Sienna, look on fondly as their two husbands laugh under the garden gazebo. None of them know it’s the last time they will be together again. What starts out as just a little fun has devastating consequences for the couples. Alone with Sienna’s husband, Greg, Abby finds him unexpectedly charming. Caught up in the moment, she reveals a secret she swore never to tell.