Welcome to the Poppy Fields, where there’s hope for even the most battered hearts to heal. Here, in a remote stretch of the California desert, lies an experimental and controversial treatment center that allows those suffering from the heartache of loss to sleep through their pain...and keep on sleeping. After patients awaken from this prolonged state of slumber, they finally will be healed. But only if they’re willing to accept the potential shadowy side effects. On a journey to this mystical destination are four very different strangers and one little dog. As they attempt to make their way to the Poppy Fields --- where they hope to find Ellis, its brilliant, enigmatic founder --- each of their past secrets and mysterious motivations threaten to derail their voyage.

Monica Tsai spends most days on her computer, journaling the details of her ordinary life and coding for a program that seeks to connect strangers online. A self-proclaimed recluse, she's always struggled to make friends and, as a college freshman, finds herself escaping into a digital world, counting the days until she can return home to her beloved grandparents. They are now in their 90s, and Monica worries about them constantly --- especially her grandmother, Yun, who survived two wars in China before coming to the States, and whose memory has begun to fade. Though Yun rarely speaks of her past, Monica is determined to find the long-lost cousin she was separated from years ago. One day, the very program Monica is helping to build connects her to a young woman, whose gift of a single pencil holds a surprising clue.

Growing up in an isolated cabin in Montana in the mid-1990s, Jane knows only the world that she and her father live in: the woodstove that heats their home, the vegetable garden where they try to eke out a subsistence, the books of 19th-century philosophy that her father gives her to read in lieu of going to school. Her father is elusive about their pasts, giving Jane little beyond the facts that they once lived in the Bay Area and that her mother died in a car accident. But when Jane realizes that her devotion to him has made her an accomplice to a horrific crime, she flees Montana to the only place she knows to look for answers about her mysterious past and her mother’s death: San Francisco. It is here where she will come to question everything she values.

1532. Santo Domingo de la Calzada. A young girl grows up wild and wily. But María knows she can only ever be a prize, or a pawn, in the games played by men. When an alluring stranger offers an alternate path, María makes a desperate choice. 1827. London. A young woman lives an idyllic but cloistered life on her family’s estate, until a moment of forbidden intimacy sees her shipped off to London. Charlotte’s tender heart and seemingly impossible wishes are swept away by an invitation from a beautiful widow --- but the price of freedom is higher than she could have imagined. 2019. Boston. College was supposed to be her chance to be someone new. That’s why Alice moved halfway across the world. But after an out-of-character one-night stand leaves her questioning her past, present and future, Alice throws herself into the hunt for answers…and revenge.

June 1975. The Taylor family shatters in a single night when two teenage siblings are found dead in their own home. The only surviving sibling, Vincent, never shakes the whispers and accusations that he was the one who killed them. Decades later, the legend only grows as his career as a horror writer skyrockets. Ghostwriter Olivia Dumont has spent her entire professional life hiding the fact that she is the only child of Vincent Taylor. Now on the brink of financial ruin, she's offered a job to ghostwrite her father's last book. What she doesn't know, though, is that this project is another one of his lies. Because it's not another horror novel he wants her to write. After 50 years of silence, Vincent Taylor is finally ready to talk about what really happened that night in 1975.

Joan Goodwin is content with her life as a professor of physics and astronomy at Rice University and as aunt to her precocious niece, Frances. That is, until she comes across an advertisement seeking the first women scientists to join NASA’s space shuttle program. Selected from a pool of thousands of applicants in the summer of 1980, Joan begins training at Houston’s Johnson Space Center, alongside an exceptional group of fellow candidates. As the new astronauts become unlikely friends and prepare for their first flights, Joan finds a passion and a love she never imagined. In this new light, she begins to question everything she thinks she knows about her place in the observable universe. Then, in December 1984, on mission STS-LR9, it all changes in an instant.

Ever since her dad left them 20 years ago, it’s been just Madeline Hill and her mom on their farm in Coalfield, Tennessee. While it’s a bit lonely and a less exciting life than what she imagined for herself, it’s mostly okay. Then one day, Reuben Hill pulls up in a PT Cruiser and informs Madeline that he believes she’s his half-sister. Reuben, who was left behind by their dad 30 years ago, has hired a detective to track down their father and a string of other half-siblings. And he wants Madeline to leave her home and join him for the craziest kind of road trip imaginable to find them all. As Madeline and Reuben --- and eventually the others --- share stories of their father, who behaved so differently in each life he created, they begin to question what he was looking for with every new incarnation.

In 2016, 34-year-old Mari Starwood travels to Martha’s Vineyard with nothing but a name on a piece of paper: Elizabeth Deveraux. Mari isn’t sure what to expect when she finally makes it to the reclusive artist’s stunning waterfront property, but she is shocked to find out that her relationship to the island runs deeper than she ever thought possible. In 1942, the Smith sisters are faced with the impossible task of holding their family farm together during WWII as the U.S. Army arrives on Martha’s Vineyard and their brother ships out to fight on the frontlines. In an attempt at normalcy, the girls start a book club that soon grows in both number and influence. But their lives are upended when a mysterious man washes up on the shore, and they find themselves questioning who they can truly trust in these turbulent times.

When Abby steps foot on Isla Colel, she isn’t sure what she’ll find. She only knows that she needs to see the place where her fiancée, Eszter, died to try and make sense of the tragic accident. Though the island was once a bustling tourist hub, a hurricane has left it a shell of its former self, with only a handful of residents remaining. Even the once-daily ferry to the mainland now runs every week or so. There, Abby befriends an alluring group of expats, but her sense of unease surges when one of them says he knows the truth about Eszter’s final days. Before he can tell her more, though, he vanishes from the island. As her quest for the truth unearths dark secrets, shady pasts and a web of lies, Abby grows more determined than ever to find out what happened to the love of her life.

Dan Garvie’s life has been haunted by the crime he witnessed as a child --- narrowly escaping an encounter with a notorious serial killer. He has dedicated his life since to becoming a criminal profiler, eager to seek justice for innocent victims. So when his father passes away under suspicious circumstances, Dan revisits his small island community, determined to uncover the truth about his death. Is it possible that the monster he remembers from his childhood nightmares has returned after all these years?