Taylor Smith hasn’t always had it easy, but she worked hard for her college scholarship and makes do with her job—all to avoid ending up like her parents. Claire, her roommate and best friend, is the exact opposite, rich beyond Taylor’s comprehension and maybe a little high maintenance. When a charming man named Dylan shows up at Taylor’s work and asks her out on a date, she is flustered, but flattered.

Eighteen years ago, FBI Agent Darcy Hunt’s life changed forever when her little sister was abducted right under her nose—murdered by a crazed guild of misguided zealots.

Summer has come to Atlantic City but the boardwalk is empty of tourists, the casino lights have dimmed, and two Jane Does are laid out in the marshland behind the Sunset Motel, just west of town. Only one person even knows they’re there. Meanwhile, Clara, a young boardwalk psychic, struggles to attract clients for the tarot readings that pay her rent. When she begins to experience very real and disturbing visions, she suspects they could be related to the recent cases of women gone missing in town.

Lucy and her husband, Adam, have been best friends with another couple, Cora and Scott, for years. The four are practically family—they vacation together, co-own a beach cottage, and their children are inseparable. So Lucy is devastated when, while looking at a colleague’s photos of a trip to the Maldives, she spots a picture of Scott, apparently on vacation with another woman.

In 1986, Eddie and his friends are on the verge of adolescence, spending their days biking in search of adventure. The chalk men are their secret code, stick figures they draw for one another as hidden messages. But one morning, the friends find a chalk man leading them to the woods. They follow the message, only to find the dead body of a teenage girl. In 2016, Eddie is nursing a drinking problem and trying to forget his past, until one day he gets a letter containing a chalk man — the same one he and his friends saw when they found the body.