Jennifer has a great job and a go-getter fiancé. She's on track for success, until she witnesses a fatal hit-and-run. Mistaking Jennifer for someone else, the dying victim extracts an impossible promise. Jennifer's fiancé wants her to forget the whole incident, but when she closes her eyes, she can still see the woman's bloody face. Olivia is in a rut. Burdened with caring for her brain-damaged brother and already feeling like a spinster at 27, she's desperate to escape. In a moment of weakness, she tells a lie that draws an unsuspecting paramedic into her life. 

As the daughter of a drug dealer, Wavy knows not to trust people, not even her own parents. It's safer to keep her mouth shut and stay out of sight. Struggling to raise her little brother, Donal, eight-year-old Wavy is the only responsible adult around. Obsessed with the constellations, she finds peace in the starry night sky above the fields behind her house until one night her stargazing causes an accident. After witnessing his motorcycle wreck, she forms an unusual friendship with one of her father's thugs, Kellen, a tattooed ex-con with a heart of gold.

Dunia Ahmed lives an ordinary life—or she definitely used to. Now she’s the subject of a true crime podcast. She’s been missing for over a year, and no one knows if she’s dead or alive. But her story has listeners obsessed, and people everywhere are sporting merch that demands “Find Dunia!” In the days before her disappearance, Dunia is a successful pharmacist living in New York. The daughter of Pakistani immigrants, she’s coping with a broken engagement and the death of her mother. But then something happens that really shakes up her world: someone tries to murder her.

A decade from now, in the historic town of Vigil Harbor, there's been a rash of divorces among the yacht-club set; a marine biologist despairs at the state of the world; a spurned wife is bent on revenge; and the renowned architect Austin Kepner pursues a passion for building homes designed to withstand the escalating fury of relentless storms. Austin's stepson, Brecht, has dropped out of college in New York and returned home after narrowly escaping one of the terrorist acts that, like hurricanes, have become increasingly common.

When Mia Sinclair-Kroner wakes from a coma, all she can remember are the movies she’s known and loved. Her college friends quickly assemble for a weekend party, in an effort to help her remember. But with old friends come old wounds, and it soon becomes clear that Mia’s accident might not have been an accident at all.