On a muggy August day in 2001, Alexandra Lind was unexpectedly thrown backwards in time, landing in the year of Our Lord 1658. Catapulted into an unfamiliar and frightening new existence, Alex could do nothing but adapt. After all, while time-traveling in itself is a most rare occurrence, time-traveling with a return ticket is even rarer. Fortunately for Alex, she lands at the feet of Matthew Graham. No woman could ask for a better guide or protector in this strange new world of hers.

It is 1715 and for Duncan Melville, something fundamental is missing from his life. Despite a flourishing legal practice and several close friends, he is lonely, even more so after the recent death of his father. He needs a wife—a companion through life, someone to hold and be held by. What he wasn’t expecting was to be torn away from everything he knew and find said woman in 2016.

Moments after Lisbeth is born, she’s taken from her mother and handed over to an enslaved wet nurse, Mattie, a young mother separated from her own infant son in order to care for her tiny charge. Thus begins an intense relationship that will shape both of their lives for decades to come. Though Lisbeth leads a life of privilege, she finds nothing but loneliness in the company of her overwhelmed mother and her distant, slave-owning father.

In a bid to outrun her past, Carrie Ballentyne accepts a nursing position with a doctor in the New Mexico Territory. She knows the journey from New York to Santa Fe will not be easy, but she relishes the adventure. However, nothing could have prepared her for the wilderness she encounters. Its vastness and power are awe-inspiring, stunning in both beauty and brutality. To endure, she must learn to rely on her fellow travelers—and one enigmatic man in particular. As the small, tight-knit group tackles challenge after challenge, she feels her heart opening to this rugged land.

September 1896: As an aspiring archaeologist, Smith College graduate Betsy Hayes travels to Athens, desperate to break into a very male-dominated field and find work at some of the world’s most famous excavation sites. In the midst of the heat and dust of Greece she finds an unlikely ally in philanthropist Charles, Baron de Robecourt, one of the few men who takes her academic passion seriously.

When a young woman vanishes without a trace from a quaint fishing village on the coast of England, only one person knows the truth, but he remains silent allowing the authorities to search for her in vain. Meanwhile, Valerie Crane finds herself transported to the year 1605. Terrified and confused, she turns for help to the Whitfield brothers, who take her in and offer her a home. Both Alexander and Finlay Whitfield fall in love with the mysterious woman, who shows up on their doorstep, creating a love triangle that threatens to consume them all.

In the summer of 1862, a group of young artists led by the passionate and talented Edward Radcliffe descends upon Birchwood Manor in rural Oxfordshire. Their plan: to spend a secluded summer month in a haze of inspiration and creativity. But by the time their stay is over, one woman has been shot dead while another has disappeared; a priceless heirloom is missing; and Edward Radcliffe’s life is in ruins. Over 150 years later, Elodie Winslow, a young archivist in London, uncovers a leather satchel containing two seemingly unrelated items.

The year is 1919, and the Great War has ended. As everyone picks up the pieces of their lives, I have only copious amounts of alcohol and women keeping me together. Most of the men I went to war with didn't make it home, including my best friend, Miles. I thought I knew everything about him until I discovered he made me the executor to his little sister Rainey's dowry.

In the spring of 1685, Lord Hugo Everly, ardent supporter of the Protestant upstart the Duke of Monmouth, vanishes without a trace just before the Monmouth Rebellion, leaving future generations forever baffled as to what might have become of him. In 2013, while visiting Everly Manor as part of her job as a location scout for a film production company, Neve Ashley stumbles onto a secret passage that leads her into the 17th century and straight into the path of the ill-fated lord.

May 20, 2019: Homicide detective Mallory is in Edinburgh to be with her dying grandmother. While out on a jog one evening, Mallory hears a woman in distress. She’s drawn to an alley, where she is attacked and loses consciousness. May 20, 1869: Housemaid Catriona Thomson had been enjoying a half-day off, only to be discovered that night in a lane, where she’d been strangled and left for dead. When Mallory wakes up in Catriona's body in 1869, she must put aside her shock and adjust quickly to the reality.