Owen falls ill with food poisoning, leaving Julie to attend a neighborhood holiday party alone. When she wakes up, half-naked in her neighbor's bathtub, Julie doesn't know how to tell Owen, the police, her friends—anyone—that she has been sexually assaulted. So she keeps it secret until she realizes that she's pregnant with her assailant's baby.

Traumatised by the death of a child in her care, top London paediatrician Claire seeks refuge on remote Selkie Island in the wilds of the Irish Sea with her husband Daniel and their baby daughter Kitty. Hidden away in Daniel’s old family home, Claire hopes to be as cut off from her guilt as she is from the mainland, but can she find peace in a place so full of its own secrets? Twenty years earlier, Daniel’s parents left the island in a boat and never made it to the mainland.

It’s the holiday season and Harriet Reed, a novelist on the brink of literary stardom, is newly engaged to Edward Holbeck, the heir of an extremely powerful family. And even though Edward has long tried to sever ties with them, news of the couple’s upcoming marital bliss has the Holbecks inching back into their lives with one invite after another.

Paul’s just here to help, or so he claims—sent by a charity for vulnerable people to do odd jobs for elderly widow Gwen. But for Gwen’s daughter Connie, there’s just something about Paul that rings alarm bells from day one. He’s a little too kind, a little too involved…Worse still, Gwen seems to have fallen under his spell.

Writer Carrie Colts hopes a move to Montauk will be a rejuvenating change of pace for her family. The last thing she expects to see is her former college roommate on her doorstep. Newly widowed, and with a daughter of her own, Maya would love to reconnect. As a gesture to an old friend in mourning, Carrie extends an invitation to stay. Just for a few days. After all, there are reasons that Carrie and Maya are estranged.