Alice and Seth are a perfect love story: the handsome doctor and his beautiful fiancée. They’re wealthy, well liked and made for each other—the envy of all their friends. Alice can’t wait for the day of their dream wedding. But when she arrives at the altar, she doesn’t recognise the man waiting to marry her. When this stranger insists he’s Seth, her husband-to-be, the entire congregation seems to agree. Even her parents try to persuade Alice to go through with the wedding.

Lizzy Beresford is at home alone when she finds a chilling letter in her kitchen. Someone has been into her home - someone who wishes Lizzy harm. In her little country cottage, with her doting boyfriend, not far from the close-knit village, Lizzy can’t imagine who might want to hurt her. But when the threatening letters keep coming, she starts to suspect everyone around her. Desperate, Lizzy reaches out to her sister, Emma. They haven’t spoken in years, not since the argument that tore them apart. But Emma says: ‘I’ve been receiving letters too....’

With its peeling wallpaper and overgrown garden, I know our new home isn’t perfect. But my husband, Ben, promises it’s the fresh start we need. I remind myself that he’s an amazing father to our two children and that we have years of happy marriage behind us. He’s been distant for months, but I’m desperate to believe the move will bring us back together.

Faye Townsend has planned the perfect summer trip for her family. But returning to the small seaside town her husband grew up in does not go to plan - the rain pours, and the long days become stifling. And then the unthinkable happens.... Her husband, Jake, and her six-year-old son, Dylan, go for an early morning walk along the beautiful, windswept clifftops. They don’t come back.

Kirstie Rawlings is jolted awake by a child crying. Racing upstairs to check on her newborn, she is plunged into every parents’ worst nightmare. She hears an unknown voice in the baby monitor, saying: "Let’s take the child - and go." Is someone trying to steal her little girl? In the bedroom, her daughter is safe asleep in her cot. Is the voice coming from a nearby house? But there aren’t any other children living on her quiet country road....